In the FormatCells menu you can lock and unlock cells, then use
toolsprotection and set the options to not allow selection of locked cells.
Hope this helps.

"angela" wrote:

I have set up a spreadsheet for a co-worker. How do I protect the formulas
so they can't be inadvertently (or intentionally) deleted or written over?
I've tried the instructions "Lock only a few cells on a worksheet" but I can
still change the cells that I want protected.