1) Right-click on the OVERVIEW sheet and select VIEW CODE
2) Paste in this sheet event macro:
3) In VBAProject window on the left in the VB Editor, doubleclick on the ThisWorkbook module to open it.
4) Paste in this workbook event macro:
5) Close the editor and save your sheet as macro-enabled workbook. (*.xlsm)
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Now, every time you VIEW the OVERVIEW sheet it will update to the most current values from all the other sheets.
Anytime you try to save the workbook, it will activate the OVERVIEW sheet first to force it's bultin macro to run first.
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