One guess hazarded .. perhaps you're asking this ? You can have cells
containing formulas locked against accidental erasure / overwriting.

If say, only col C contains formulas that's to be protected, then try this
sequence. Select the entire sheet, click Format Cells Protection tab
Uncheck "Locked" OK. Then select only col C, click Format Cells
Protection tab Check "Locked" OK. Then apply sheet protection via
clicking Tools Protection Protect Sheet Password? OK. That's it.
Test it out. Only col C would be protected. Elsewhere on the sheet, cells
would be unprotected, allowing for say, data inputs.
--
Max
Singapore
http://savefile.com/projects/236895
xdemechanik
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"novice" wrote in message
...
Can I lock a condition alone in a cell so that the cell still can be
modified

Example

in A1 I have a drop down list (select A, B ,C)
n B1 I have IF(A1="A","Ape",IF*(A1="B", "Banana",if(C1="","")))
How do I protect C1 from being deleted when users fill in the form?