Allow entry into a cell only if another is empty

weh2oski

New Member
Joined
Sep 26, 2002
Messages
16
I need to allow entry into cell A1 only if Cell A2 is blank or oposite. leave user of spreadsheet with choice of cells to enter but not allow entry into both.
 

Excel Facts

How to find 2nd largest value in a column?
MAX finds the largest value. =LARGE(A:A,2) will find the second largest. =SMALL(A:A,3) will find the third smallest

jimboy

Well-known Member
Joined
Apr 11, 2002
Messages
2,314
select cell A1, go to data > validation

select custom, in formula type;

=IF(A2="",TRUE,FALSE)

and in A2 do the same but change the formula to;
=IF(A1="",TRUE,FALSE)
 

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