Rules for changing array formulas - Microsoft Support
https://support.microsoft.com/en-us/office/rules-for-changing-array-formulas-8a80c2c1-44c1-42c3-88c1-37a3a7c2d367
WEBArray formulas are a special case, so do one of the following: If you've entered a single-cell array formula, select the cell, press F2, make your changes, and then press Ctrl+Shift+Enter.. If you've entered a multi-cell array formula, select all the cells that contain it, press F2, and follow these rules:
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