Most people set up a dropdown list to make spreadsheets smarter with Excel's data validation. However, the Custom option in the Data Validation dialog accepts any formula that returns TRUE or FALSE, ...

Traditional methods for creating dynamic drop-down lists in Excel, such as using INDIRECT or named ranges, often come with significant limitations. These approaches can break when tables are renamed, ...

I used to set aside time every week to clean my spreadsheets by running helper formulas, scanning for red cells from conditional formatting, and fixing typos that had snuck in over the past few days.