Originally Posted by
EdMac
Hi chojje,
To stop someone changing a cell you need to protect the sheet - all cells are protected by default when you protect the sheet so before doing this you need to select the cells that may be changed, right click >format > protection > remove the check mark against locked.
Then go to tools > protection > protect.
Not quite sure what you mean by the second part but if the problem you want to cure is that if the result of a calculation is negative then
=If(Your_calc<0,0,Your_calc)
Let me know how you get on
Ed
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