OFFSET function - Microsoft Support
https://support.microsoft.com/en-us/office/offset-function-c8de19ae-dd79-4b9b-a14e-b4d906d11b66
WEBOFFSET can be used with any function expecting a reference argument. For example, the formula SUM (OFFSET (C2,1,2,3,1)) calculates the total value of a 3-row by 1-column range that is 1 row below and 2 columns to the right of cell C2. Example. Copy the example data in the following table, and paste it in cell A1 of a new Excel worksheet.
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