Block bad data, duplicates, and incorrect dates with these custom rules.

Microsoft Copilot for Excel creates a separate check tab that checks row counts per source, helping you spot missing or extra ...

Q: I have an Excel spreadsheet that I update weekly with our employees’ Actual Sales and Sales Goals. I manually insert a red circle to indicate those who did not reach their sales goal by more than a ...

When multiple data variables are accommodated in a project, the time and spatial grids of those variables must be identical. As such, you must control the data other people enter. That’s when you need ...

Follow the steps below to create a drop-down list using data validation in Excel. If you want to add a message pop up, you can click the Input Message tab and check the checkbox for “Show input ...

In many cases, you want people to enter a valid date, and no other type of information, when they're putting data into a cell in Microsoft Excel. For example, you might be asking people to record days ...