Gemini custom instructions: what to save at work

“Keep it brief.” “Put the next action first.” “That price was only for one customer.” These are different kinds of instructions. Saving all three as permanent defaults can create a problem instead of removing one.

Here is how to separate them, check access, and write preferences worth keeping.

Download the instruction planning sheet. It includes filled-in examples and blank rows. Open it in Sheets, Excel or another spreadsheet app. It is a planning sheet, not a Gemini import file.

The September Workspace update

What changed

Google announced the expansion on September 2, 2026. It names Ask Gemini in Drive and Chat, plus the Gemini side panels in Gmail, Sheets and Slides. Saved instructions were already available in Docs; this is an expansion, not the invention of custom instructions.

The rollout can take up to 15 days. An announcement does not mean the setting has reached your account.

You can also ask Gemini to remember a preference in the conversation. Google's example below shows it asking for confirmation before saving the instruction.

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Chrome Unboxed's earlier coverage identified the everyday frustration: having to restate your writing preferences. Outwood's September digest shows the expansion in a work setting. Neither establishes how much time your business will save.

Access and cost

First, check the Google account you actually use for work. Google's help page explicitly says that Workspace instructions do not sync with instructions in Gemini Apps. Changing preferences at gemini.google.com is not the same as changing them inside Gmail or Docs.

There is also a documentation mismatch worth knowing about. The announcement describes availability for Workspace customers with access to the named surfaces. The help page, checked September 6, still says US and English only, and lists Gemini Beta access for work or school accounts. Personal-account requirements differ again. We cannot confirm Canadian availability or universal access from those pages. Check the setting, or ask your Workspace administrator, before upgrading.

For budgeting, Google's US pricing page lists standard rates of US $7 for Business Starter, $14 for Standard and $22 for Plus per user per month with an annual commitment, alongside promotional discounts. Starter lists Gemini in Gmail; Standard lists broader Workspace access. Those prices are not a guarantee that personalization is enabled. Check your billing terms and eligibility directly. This guide requires no paid automation connector or additional setup service.

A practical example

Imagine you prepare a project summary in Docs, then draft the customer email in Gmail. In both places, you want the next action first, plain language and no invented commitments.

The reusable preference is the way the answer is written. The customer's chosen product, current quote and available installation dates belong in the specific task and its approved source material.

This is our suggested separation, not a recorded Gemini result. It keeps a temporary fact from becoming a standing instruction for unrelated work.

Limits and alternatives

Saved preferences are guidance, not a permission system or a guarantee of accuracy. They do not authorize sending email, changing a price or making a booking. Review the draft and the source facts yourself.

If the setting is missing, keep a short instruction in a document and paste it into the relevant task. That is a manual fallback, not an automation. If a rule applies to only one customer or document, put it in that task instead of your general preferences.

Three instructions worth adapting

Start small. Save one instruction, check how it affects two different tasks, and add another only when it solves a repeated problem. The examples below are original starting points for you to adapt, not promises of identical output.

The opening condition matters: “When I ask you to draft a customer email.” Without it, an email-writing rule might also distort a report, a brainstorm or a spreadsheet explanation.

This format makes missing information visible. It does not prove that a source is correct or current; you still need to check it.

Do not save “Always use Canadian dollars” if you work with both US and Canadian quotes. A rule to preserve the source currency is safer than one that silently overrides it.

Why “use bullet points” often needs more detail

In an August 20 discussion, a Gemini user wanted an outline with explanatory paragraphs, not a flat list. Their short instruction was not producing the intended structure.

A reply suggested providing an example of the desired output. The useful lesson is to name the structure you want, rather than a vague style. That is why the project-summary example above names three sections and describes what belongs in each. The thread does not prove the new Workspace feature will follow every instruction.

How-To Geek's coverage of the earlier Docs feature also raised the issue of preferences affecting unrelated documents. Our recommendation is to make saved instructions conditional and keep changing project facts out of them.

Add one instruction in the right place

For an eligible account, Google's documented desktop path is:

1. Open Gmail, Docs or Slides in the account where you want the preference.
2. Open Ask Gemini.
3. Go to Menu → Settings → Personalization.
4. Select Add, paste one instruction, then Save.

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Below a response, Google says Sources → Personalization settings can show the instructions used. Check the actual answer too: a listed instruction is not evidence that every part was followed correctly. Ask Gemini in Chat uses a different management path; follow the help page for that surface.

Do not place passwords, customer records, confidential prices or a temporary discount in a reusable instruction. Use your organization's approved data-handling process for the source material instead.

Check the effect before you keep it

In Google's demonstration, a later email summary starts with action items, matching the saved preference shown above.

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Use fictional information for this check. You are looking for a useful preference, not testing on a customer.

Record the result in the planning sheet. If a preference makes unrelated work worse, narrow its wording or turn saved instructions off while you revise it. Google's help page says turning them off retains the saved list; deletion is permanent.

The decision is simple: keep a preference only when it improves the work you actually repeat. Do not keep adding rules to compensate for an unclear task, missing source or feature your account does not have.

Saved writing preferences help with drafts you ask for. If you need customer enquiries to trigger replies and follow-up without opening a chat each time, that is a separate system. Our lead-response guide explains the handoff, and Instant Lead Response describes the installed service.