I need a Sub preventing users from saving a workbook, when
on worksheet "Scorecard" certain cells (cell ranges with
percent values) are blank:
G26:I26 Customer Weight
AG26:AI26 L&G Weight
G44:I44, Financial Weight
AG44:AI44 Process Weight

Also need a message box directing the user to the blank
cell, saying which cells are blank: "A value greater than
zero is required for Customer Weight." If more than one
cell is blank, the message would include those cells too.

Where would I put the Code?

Thanks, Phil