Discover how to highlight shared availability across multiple calendars

If you're looking to streamline your D&D session planning with Excel, highlighting common empty time slots across multiple calendars can significantly enhance your scheduling efficiency.

3 min readMicrosoft Excel | Help & Support with your Formula, Macro, and VBA problems | A Reddit Community

**Our Take: When Spreadsheets Become the Dungeon Master**

This Reddit user's request for a D&D session planner reveals something fundamental about how we think about data. They aren't asking for a better spreadsheet. They're asking for a tool that understands collaboration, specifically, the shared availability of five people across multiple calendars. Their problem isn't Excel; it's that Excel treats each calendar as an isolated island. The user has to manually check that C9:C14 is empty in *every* calendar before they can confidently schedule a game. That's not a technical limitation. It's a design philosophy that assumes data lives in silos.

What this person needs is a spreadsheet that thinks like a coordinator, not a ledger. They need conditional formatting that doesn't just highlight empty cells, but highlights cells that are empty *across a range of conditions*. In plain terms: if Calendar A, Calendar B, and Calendar C all show open slots from 3:00 PM to 8:00 PM, those cells should light up automatically. No manual cross-referencing. No "wait, did I check the third calendar?" moments. The tool should do the heavy lifting of comparison, so the user can focus on what matters, like whether the party should ambush the goblins or parley.

This is where the vision of an AI-native spreadsheet becomes tangible. Instead of asking users to write complex formulas or nested conditional formatting rules, the tool could understand intent. The user says: "Highlight times when all five of us are free." The spreadsheet interprets that as a multi-dimensional lookup across separate ranges, applies the logic, and returns the answer. No syntax errors. No frustration. Just a highlighted block that says, "Here's when you can play."

We believe the future of data work isn't about making users more expert in spreadsheets. It's about making spreadsheets more expert in understanding users. This Reddit user's request for a D&D session planner is a small example, but it's the kind of friction that kills momentum, whether you're planning a campaign or coordinating a project launch. The tool should adapt to the task, not the other way around. So if you've ever spent an afternoon manually comparing calendars, or building workarounds for what feels like a simple question, know this: the spreadsheet should be the one doing the work, not you.

From Microsoft Excel | Help & Support with your Formula, Macro, and VBA problems | A Reddit Community

https://preview.redd.it/xti3sx9lkesg1.png?width=1048&format=png&auto=webp&s=ca913386e3a387d2b98247e5260c3d667f09d792

Hello! I don't know much about excel. I need some sort of way to make empty cells get highlighted only if in every calendar added they are empty as well. for example, in this case, i would need C9:C14 J9:J14 highlighted because from 15:00 to 20:00hs both calendars have availability. It's for D&D session planning and I have to also add three more calendars. help

Read the original at Microsoft Excel | Help & Support with your Formula, Macro, and VBA problems | A Reddit Community