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Gamma · Google Sheets Guide

Sample 3: Sub-Headings + Bold — Marketing Performance Deck

May 11, 2026
4 min read

The Scenario

The Setup

You are a marketing analyst. It is 8:30 AM and your CMO wants a deck ready for the 9 AM leadership call.

Your Q2 campaign performance is sitting in a Google Sheet across eight channels, with columns for impressions, clicks, conversions, and spend. You have thirty minutes.

The Bad Version

You read the sheet, try to hold eight channels and four metrics each in your head, and type a summary into Gamma's prompt box. You regenerate three times to get the slide order right.

You manually rewrite the headlines because your summary did not give Gamma enough to work with. You rebuild the recommendations slide twice because the numbers you typed do not match what is in the sheet.

You miss the 9 AM start.

The Good Version

One prompt and SheetXAI does the reading for you.

The Easy Way: One Prompt in SheetXAI

What SheetXAI Does

SheetXAI is an AI agent inside your spreadsheet that reads the data and writes the Gamma prompt for you, so you do not have to summarize anything by hand.

The Prompt

Open the SheetXAI sidebar inside your Google Sheet and type:

Generate a Gamma presentation summarizing this Q2 marketing data. One slide per channel showing impressions, clicks, conversions, and spend. Add a summary slide at the front comparing channel performance, and a recommendations slide at the end with three takeaways based on the actual numbers. Use a clean professional theme.

What Happens

The first time you do this, SheetXAI hands you a one-click Connect link for Gamma. You click it once, sign in, and from then on the integration just works.

SheetXAI reads the sheet, understands the channel structure, calls Gamma with the right data and prompt, and writes the resulting Gamma URL back into a cell. Click it. Your deck is ready.

What You Get

The Deck Structure

You get a Gamma presentation with ten slides. A summary slide comparing the eight channels at a glance, eight per-channel slides showing the four metrics each, and a final recommendations slide.

Grounded Recommendations

The recommendations slide is based on what is in the sheet, not on generic language. If paid social had the worst cost per conversion and email had the best, that is what the slide says.

Adjustable on the Fly

If you regenerate, you can tell SheetXAI to look at trends month over month instead of raw totals, and it adjusts.

When the Numbers Update

Repeatability

When July rolls around and you have a fresh sheet, you do not have to sit down and re-summarize the data for Q3.

How It Works the Second Time

You give SheetXAI the same shape of prompt. It reads the new numbers itself. Gamma builds the new deck. Same structure, fresh data, new URL.

The deck shape stays consistent meeting to meeting, which is what your leadership actually wants from a recurring review.

What If the Data Is Not Quite Ready

Inline Cleanup

You can do the cleanup in the same prompt. If your sheet has campaigns from three platforms with inconsistent naming, ask SheetXAI to normalize them first, then generate the deck.

Handling Holes in the Data

If some rows have missing spend, tell it to flag those and exclude them from the totals.

Why This Beats the Manual Flow

It handles the conditional thinking inline, which is what makes this faster than the manual flow even on a messy data set.

Try It

Get the 7-day free trial of SheetXAI and open any sheet with multi-channel performance data, then ask it to turn the data into a Gamma deck. The Gamma integration is included in every SheetXAI plan. For a step up, see how to generate one Gamma doc per row or the Gamma in Google Sheets overview.

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