ChatGPT for Your Team · Lesson 7 of 7

Capstone: retest your prompts and a 30-day check

20 minutes now, then 20 minutes in 30 days. For the owner plus one staff member. Prove the new model still does your real work, and put a date on the follow-up.

---

You've set up the workspace, chosen your protective settings, taught the daily habits, built a shared project, connected what you need and set your spending limits. Two jobs remain.

The first is a retest. GPT-6 began rolling out as the default model in Chat on October 7, 2026. Your team's best prompts were written for an older model. Most will work as well or better. Some will come back in a different shape, or with interactive elements you can't paste. You want to find out on your terms, not when a customer email goes out looking odd.

The second is a check-in. Workspaces drift. Seats go unused, apps get connected, a custom GPT retirement date gets closer. Thirty days from now, you'll spend 20 minutes catching all of that at once.

Part 1: Retest your three most-used prompts (15 minutes)

Do this with one staff member who uses ChatGPT every day. At Comfort Zone Heating & Cooling, our fictional HVAC company, Marcus did it with Dana.

Step 1: Pick the three

Open the Prompt Retest Log from Lesson 3. If your team filled in several, choose the three that get used most often, across everyone. For Comfort Zone, they were:

  • The appointment confirmation email.
  • "Turn the technician's notes into a job summary for the customer."
  • "Summarize this week's open jobs from this spreadsheet."

Step 2: Run each one the way you really use it

For each prompt:

  • Use the company workspace.
  • Use the shared project if that's where the work happens now (Lesson 4).
  • Use GPT-6 at the Thinking level you'd normally use (usually Instant or Medium).
  • Use the same kind of real input: a real set of notes, a real spreadsheet, with private details removed.

Step 3: Score each answer against four questions

Write a short answer for each on the log:

  • Are the facts right? Every number, date, name and price, checked against your own records. Any fact you didn't provide is wrong until proven otherwise.
  • Is it the right format? Is it plain text you can paste, or did it come back with a table, chart, buttons or a form? (Lesson 3.)
  • Does it paste cleanly? Paste it where it really goes (your email, your invoicing or job software, a text message) and send it to yourself.
  • Is it better, the same, or worse than what you got before?

Step 4: Fix what needs fixing

Most fixes are one line:

  • Came back with interactive elements or tables? Add "Plain text only, ready to paste. No tables, buttons or charts." Better yet, put that line in the shared project's instructions, so nobody has to remember it.
  • Too long or too short? Give a word limit.
  • A wrong fact? Don't fix it in the prompt. Fix the source: the project file or the instructions it came from.
  • Worse in a way you can't fix? OpenAI says older selectable models aren't being retired by this rollout, so a person can choose GPT-5.6 Sol in the model menu for that task while you work it out. Write that down as a temporary exception, with a date to try again.

Save the improved prompt on the log, with the date. That's the version the team uses from now on.

Part 2: Book the 30-day check (5 minutes)

Put a 20-minute meeting on the calendar for 30 days from today, with the second owner. Paste this list into the invitation. It's also Part 4 of the Workspace Setup Checklist.

The 30-day checklist

Seats and money (Workspace settings > Billing, and Workspace settings > Members)

  • [ ] Every paid seat is assigned to someone who used it this month.
  • [ ] Unused seats are scheduled for reduction.
  • [ ] Anyone who hit limits every week is a candidate for Premium. Anyone who barely used Premium can move to Standard.
  • [ ] Credit usage limits are still set. Automatic reload is off or capped.
  • [ ] Monthly or annual? Decide now that you know who really uses it.

People and access

  • [ ] Pending invites and join requests are reviewed. Nobody is in the workspace who shouldn't be.
  • [ ] Anyone who left the company has been removed, and their seat dealt with.
  • [ ] Still two owners, and no more admins than you need.
  • [ ] Everyone has MFA on. (Ask each person. OpenAI says it can't be enforced for the workspace.)

Settings

  • [ ] The enabled apps list still matches what people need. Turn off anything nobody used.
  • [ ] No one uses Allow all actions on an app.
  • [ ] Your retention decision from Lesson 2 still stands.

Shared work

  • [ ] The shared project's files are current (prices, policies, service area).
  • [ ] Only one or two people have edit access.
  • [ ] Every custom GPT on your list has moved to a project or a plugin, or has a firm date before December 11, 2026.

The one-account rule

  • [ ] Ask each person directly: "Is any company work happening in a personal ChatGPT account?" If yes, help them move it, and remind everyone why.

Prompts

  • [ ] Rerun your three prompts. Anything changed? Update the log.
Keep it going

After the first 30-day check, move to a lighter rhythm:

  • Every quarter: run the 30-day checklist again.
  • Whenever OpenAI changes the default model: rerun your three prompts before the team relies on the new one.
  • Whenever someone joins or leaves: invite or remove them the same day, and check the seat count.
Check it worked

Use your three templates and tick every box:

  • [ ] Workspace set up right. The Workspace Setup Checklist has a decision and date for every item in Parts 1, 2 and 3: plan, seats, owners, discovery, training, retention, memory, shared links, apps, roles, MFA and spending limits.
  • [ ] The one-account rule. It's on the Team ChatGPT Card, every person has seen it, and every person works in the company workspace with their own account.
  • [ ] Shared projects and GPTs. At least one shared project is in daily use, with current files and one or two editors. Every custom GPT has a plan and a date.
  • [ ] Prompts retested. The Prompt Retest Log shows your three most-used prompts run on GPT-6, scored on facts, format, pasting and quality, with an improved version saved.
  • [ ] A person in charge. Every message to a customer and every money decision this month was read and approved by a person.
  • [ ] The 30-day check is on the calendar, with the checklist in the invitation.
You're done

You started with ChatGPT scattered across personal accounts, settings nobody had chosen, and a bill nobody could explain. Now there's one company workspace, two owners, settings chosen on purpose, a shared project that keeps everyone's facts the same, connected apps that ask before they act, a predictable bill, and prompts you know work on the new model.

None of this depends on a specific model or menu. When OpenAI changes something next month, and it will, you have the habit that matters: check it against your real work before you trust it.

Next steps, when you're ready:

  • Claude for Your Team if your business uses Claude as well. Same lesson order, same habits.
  • Write Your Team's AI Rules in an Afternoon to turn the Team ChatGPT Card into a signed policy.
  • Lock the Doors: AI Security Basics for a Small Office for the accounts and sign-in settings behind all of this.
  • Answer Customers Faster with AI for a ready-made routine to run inside your new shared project.

Previous: Costs, seats and what's included · Back to the course