You can lock an individual cell or multiple. Once you've highlighted the cells you want to lock, right-click them.
Protect range is Google's term for locking a cell.
You can choose a range of cells here, as well, if desired. You can also, optionally, add a description to the locked cell to explain why the cell is being locked.
You have a few options here.
- You can set a warning on the cell, as opposed to actually locking it. This will let someone know to be careful with editing data in the cell.
- You can restrict the editing of the cell to Only you or specific people.
Once you've decided how you want to lock the cell in Google Sheets, click Done.
The cell will now be highlighted to indicate that it is locked.