Need help creating pop up box that displays information from box to table

Basically I have the information displayed like this:

A1 to A10 B1 to B10 C1 to C10 D1 to D10 E1 to E10

Verify correct column numbers and placement



When I go to add the next set of numbers which would be F1 to F10 in this example, I'm wanting it to add a row so that the spacing doesn't change between my listed numbers and the line "Verify correct column numbers and placement". So it would then look like:

A1 to A10 B1 to B10 C1 to C10 D1 to D10 E1 to E10
F1 to F10

Verify correct column numbers and placement


This way every time it's going to move to the next row, it inserts another row.

Also, when I try using "Y" or "Z" in the column text box, I get the error that says it is not a valid column specification. Any ideas on what to do with that?