Hello,

In a worksheet I calculate a sum with SUMIF function. It adds up
corresponding numbers if selected by an "X" in a group of cells.

I want to protect the numbers and the summation cells (for accidental
damages to formulae) with a password but when I send the worksheet to
colleagues I want them to manipulate the sum by adding or removing "X"s.

How can I do that?

Thanks
Archie