Locking a cell based on a cells content
 

I am wanting to lock cell A1 from being able to be populated if both B1 & C1
are both empty.

Is this possible?

Locking a cell based on a cells content
 

Data - Validation, Custom
=COUNTBLANK(B1:C1)<2

Also, uncheck the "ignore blank" option.

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Best Regards,

Luke M
"The Rook" wrote in message
...
I am wanting to lock cell A1 from being able to be populated if both B1 &
C1
are both empty.

Is this possible?