I have a "Notes" column that requires text before the checkbox under "Req Attn" will be checked, kicking off conditional formatting in other columns.
I found this thread and tried to implement the suggested solution:
https://community.smartsheet.com/discussion/formula-help-if-cell-blank-checkmark-cannot-be-checked
I created a third column, "WrongOrder1", and then this formula:
=IF(AND(ISBLANK(Notes3), [Req Attn]3 = 1), 1, 0)
However, entering text under "Notes" does not check the box. I can check the box and the corresponding checkbox will become checked, if that helps.