I want a SUM formula to occur in cell B34 that includes the following cells,
providing they are not blank. O12,O13,O23,O24,O36,O37,O45,O46,O56,O57,O65
and O66. These cells have a drop-down selection of numbers from 1-5, and
have data validation and conditional formatting set to red prior to them
choosing from the drop-down list.
I can nest ISBLANKO12:O13 in an IF function and if False have the SUM
formula occur, but how do I also include these cells
(O12,O13,O23,O24,O36,O37,O45,O46,O56,O57,O65 and O66) in the IF function too?
If any of these cells are left blank by the user I want a message to appear
informing them that they must enter data in all of the cells before they find
a result shown in B34.
This message is not to be shown before the user starts entering data in the
cells.