Have you ever carefully crafted a formula in Excel, only to watch it unravel into chaos the moment you copy it across columns? It’s a maddening quirk of Excel tables—structured references that seem to ...

Locking is a handy function in Excel that allows users to lock specific or all cells in a worksheet to prevent any intentional or unintentional editing of them. You can easily lock cells in a sheet by ...

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