Locking cells in a Microsoft Excel spreadsheet is among the most commonly used functions. Here’s a guide on how to lock cells in Excel.

Safeguard your Excel worksheets from accidentally deleting formulas or data sets by locking important cells, while leaving the rest of the worksheet editable.

You can lock the position of a chart in Excel spreadsheet so that it doesn't move or resize when you include more columns and change cell width. Learn how!

Disappointed that you can't protect cells in Numbers as you can in Excel? Here are a couple of workarounds.