To activate Power Pivot, go to File > Options, click Add-ins, select COM Add-ins from the dropdown, and check the box for ...

Wondering how to add in Apple Numbers? We’ll show you a couple of different methods you can use to total your numbers in the app on Mac, iPhone, and iPad.

Microsoft Excel PivotTables turn data into meaningful information, but it's difficult to add grand total rows. Read on to learn how.