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Training a GM for a New Unit

The 90-day arc from T-minus-90 to opening week. What gets learned when, who teaches it, and why the training you do for the third location is not the training you need for the fifth.

Kiyong (Eric) Lee·Operations Executive·August 2026·9 min read

The short version

Ninety days of training, in three 30-day phases. Shadow, then lead-with-safety-net, then own the build.
The training is inside a healthy sister unit for the first 60 days. Not in a classroom. Not on Zoom.
Milestone gates matter more than hours logged. If a milestone slips, extend the phase before you advance.
When you scale from three to five units, prepare the general managers for the absence, not the presence.
Opening week the area director works the pass, not the office. Then they back off on a scheduled ramp.

The first time I opened a new unit at Zareen's, I promoted a strong shift lead into the general manager role three weeks before the doors opened. He was smart, he cared, he had run every station in the sister unit for two years. What he had never done was run a shift alone. He had never published a schedule. He had never sat across from a produce vendor and negotiated a spec change. He had never walked a P&L line by line with an accountant.

The opening went, and by month four he was solid. But months one through three were rougher than they needed to be, and the reason was not that he was the wrong person. He was exactly the right person. The reason was that I had given him three weeks of training for a job that needed ninety days.

That was the third of the Zareen's locations. When we later scaled from three to five, both of the new-unit general managers came out of a 90-day training arc that I will lay out here. The difference in the first 60 days of open, between the compressed training and the deliberate one, was not small. It was the difference between a general manager who could run their weekly P&L review alone in week two and one who needed the area director sitting next to them until week six.

The 90-day arc

The training splits cleanly into three 30-day phases, each with a specific job. The gates between phases are milestones, not calendar dates. If a milestone slips, you extend the phase. Advancing on schedule with holes is how you end up with a general manager who looks trained on paper and drowns in the first month of open.

Fig. 1 · The 90-day general manager training timeline.

Phase 1, T-90 to T-60: shadow inside a healthy sister unit

The incoming general manager spends 30 days inside a healthy sister unit. Not the unit they will run. A unit that is already running well, with a sitting general manager who is willing to be shadowed and who is honest about what they do and do not know.

The first two weeks are station work. The incoming general manager works every station of the kitchen, one week each, and every position on the floor, two days each. This is not menu training. They already know the menu. This is muscle memory of the operating system: how the prep list gets written, how the line is stocked at open, how the mid-service reset gets called, how the closing walk-through runs.

The second two weeks are manager shadow. The incoming general manager is on the manager-on-duty shift alongside the sitting general manager. They watch every decision the sitting GM makes and, at the end of each shift, they debrief for 20 minutes on the calls that were close. Why did you push the salad-station cook to a different section? Why did you pull the walk-in reset until tomorrow? The answers to these questions are the shape of the job.

Gate to advance to phase 2

By day 30 the incoming general manager can run a full shift end to end without asking a station lead a procedural question. If they still have to ask the closing sous where the daily prep sheet lives, they are not ready. Extend phase 1 by a week.

Phase 2, T-60 to T-30: lead the shift with the safety net present

Halfway through the training, the roles flip. The incoming general manager runs the shift and the sitting general manager stands back. Present, but silent unless guest experience or safety is at real risk.

This is the phase where you find out whether the training is landing or whether the incoming GM is still faking it. When the shift is theirs, every decision is theirs. Every schedule call, every void, every push-back on a vendor short, every conversation with a line cook who is having a bad night. The sitting general manager takes notes and debriefs at the end.

Two specific drills matter more than any other in this phase:

Publish a schedule that holds labor within one point of target. Not just publish. Own it through the week. Handle the call-outs. Approve the swaps. Recut the schedule mid-week if demand comes in different than forecast. The first schedule they publish will be off by three or four points. The fourth one should be inside one point.
Walk a P&L line by line with the accountant. Twice, at least. The first time is a survival exercise. The second time they should be able to name the top three variances from plan without notes. This is the muscle they will use every Monday morning for the rest of their career.

The point of phase 2 is not to make the incoming GM comfortable. It is to make them uncomfortable in a room where discomfort is safe. Opening week is not safe. That is the wrong week to learn what you do not know.

Gate to advance to phase 3

By day 60 the incoming general manager has published two schedules that held labor within a point, walked a P&L unaided, and run a full week of shifts where the sitting general manager did not have to intervene. If any of those is soft, extend phase 2 by a week.

Phase 3, T-30 to opening: own the new-unit build

The last 30 days the general manager owns the new unit. Vendor accounts get set up in their name. The staff hiring loop runs through them. The opening inventory order goes out with their signature. The first schedule for the new unit is theirs to build, not something handed to them.

The area director shifts from teacher to safety net. Every decision still gets discussed, but the general manager makes the call and the area director backs the call. If the call is wrong, that is a debrief conversation, not an override conversation. Overrides in phase 3 teach the general manager that when the stakes are real, the area director will take the wheel. That lesson is poison in opening week.

Specific deliverables the GM owns in phase 3:

The staff org chart and the first three weeks of schedules. Names, positions, day-part assignments, opening and closing coverage. If they cannot build this, they cannot run the unit.
Vendor list with the primary and backup for each category. Produce, protein, dairy, dry goods, paper, chemicals, linen. Every category has a primary and a backup. Every account is in the GM's name.
Opening inventory par sheet. Not the theoretical par. The actual first-week par based on projected covers and the concept's par-to-sales ratio at the sister unit.
The first draft of the local marketing calendar. Which neighborhood outreach, which local press, which community events, which day of the week the general manager will be visible in the neighborhood.

Gate to open

By opening week the general manager can walk any operator, including a stranger, through the new unit and name what is finished and what is still open. If they cannot, they do not know their own unit yet, and opening week will teach them the hard way.

Opening week: decision-rights handoff

In opening week the area director works the pass, not the office. On the floor next to the general manager but not making the calls. Watching how the general manager runs the shift briefing, how they handle the first void, how they debrief the closing team. Stepping in only if guest experience or safety is at real risk.

At the end of each service, a 30-minute debrief. What went well, what did not, what changes tomorrow. The area director asks questions. The general manager answers. The muscle you are building here is not doing the job. It is thinking about the job while doing it.

Fig. 2 · Area director presence ramping down, week one through week four.

Week two the area director backs off to two visits. Week three, one visit. Week four, the general manager is on the standing regional cadence and the area director sees them the same way they see every other GM in the region.

What changed when we went from three to five units

At three units the area director is inside every unit every week. That is enough coverage to catch a slipping general manager before the numbers slip. At five units, it is not. The math simply does not allow it. Every general manager gets less time and every general manager has to hold more of the operating system in their own head.

When we scaled Zareen's from three to five locations, the single biggest lesson was this: prepare the general managers for the absence, not just for the presence. What that meant in training terms:

The dashboards become the primary reporting tool, not the visit. The general manager owns the dashboard. The area director reads the dashboard between visits.
The weekly P&L review is real, not ceremonial. The general manager runs it. They present variances, they present the plan for the coming week, they name the risks. The area director listens more than they talk.
Peer accountability replaces manager accountability. All five general managers in a monthly regional operating review. Peer pressure does more work at five units than any 1:1 does.

What I got wrong the first time

Three honest mistakes from the first new-unit opening I ran:

I trained on concept, not on system. I spent too much time on the menu, the wine list, the story. I spent too little time on how the closing walk-through actually gets run. The concept is the easy part. The system is the job.
I let phase 2 be quiet. The sitting general manager was too polite. They intervened too much and debriefed too little. If phase 2 is comfortable for the incoming GM, phase 2 is broken.
I did not build the dashboard before opening. Same mistake I made in the turnaround. The general manager should be looking at their own numbers every morning from day one of open, not from week four.

The point

Training a general manager for a new unit is not a knowledge transfer. It is a decision-rights transfer. The point of the ninety days is to move the operating system from the head of the person who has been running it into the head of the person who is about to. That transfer only happens when the incoming general manager has made real decisions, in a real unit, with real consequences, before opening week.

Cadence beats charisma. And a general manager who has already lived one weekly P&L review, one bad Friday service, and one full week of schedule ownership before opening day will run circles around a stronger operator who has not.

Scaling from three to five units?

I take on a small number of new-unit opening and multi-unit scaling engagements each year, mostly restaurant groups moving from three to eight locations. If you are staring at a new-unit opening and a general manager who is smart but green, I am happy to trade notes.

Get in touch

Questions people ask

How long does it take to train a general manager for a new restaurant unit?

Ninety days if you do it deliberately, three to six months if you do not. The 90-day arc splits into three phases: 30 days shadowing inside a healthy sister unit, 30 days leading shifts in the sister unit with the sitting general manager silent, and 30 days owning the new-unit build before soft open. If you compress any of the three phases, the general manager will hit opening day with holes in their operating system that only show up under load.

Should you hire a general manager externally or promote from within?

For a new-unit opening, promote from within if you can. The internal candidate already knows your systems, your recipes, your vendors, and your operating rhythm. Their training arc is about scale, not about the concept. An external hire adds a concept learning curve on top of the unit learning curve, and that combination often stretches training to five or six months. When we scaled Zareen's from three to five locations, both new-unit general managers came from inside the existing units.

What does shadowing a sitting general manager actually look like?

Not standing behind them with a clipboard. Shadowing means working every station of the healthy sister unit for a week each, then working the manager-on-duty shift alongside the sitting general manager for two weeks. The point is muscle memory of the operating system: how the order guide gets built, how the schedule gets published, how the closing walk-through gets done, how the weekly P&L review flows. Concept knowledge is a byproduct.

When should the incoming GM start making real decisions?

Day 30 of the training arc, inside the sister unit, with the sitting general manager present but silent. The incoming GM runs a full shift, makes every call, and gets debriefed at the end. Any decision that took longer than 20 seconds gets flagged and worked through together. This is where the sitting GM stops teaching and starts being a safety net. It is also where you find out whether the training is landing or whether the incoming GM is still faking it.

What are the milestones you actually measure during GM training?

Four hard ones. By day 30, they can run a shift end to end without asking a station lead a procedural question. By day 60, they can publish a schedule that holds labor within one point of target. By day 75, they can walk a P&L line by line and name the top three variances from plan without notes. By opening day, they can run a shift briefing that lands with the team. If any milestone slips, extend the phase before advancing.

What breaks when you scale from three to five units?

At three units, the area director can still be inside every unit every week. At five units, they cannot. The general managers have to run their units alone between visits, and if they cannot, the whole region drifts. The fix is not more visits. The fix is training the general managers, before opening, on the operating rhythm and the dashboards they will use to run alone. When we scaled Zareen's from three to five locations, this was the single biggest lesson: prepare the general managers for the absence, not just for the presence.

What is the area director's role during opening week?

They work the pass, not the office. In opening week the area director is on the floor next to the general manager, but they are not making the calls. They are watching the calls the general manager makes, debriefing at the end of each service, and stepping in only if guest experience or safety is at real risk. By week two of open, the area director backs off to twice-a-week visits. By week four they are on the standing regional cadence.