The document is "protected".

I would like to force the user if he checks the Insitution box that it activates the drop down and they have to make a selection (something other than "please choose cdb category here" the default)

The fields can have new content that controls the field - but for the drop box it is by selection only, and the check box can be checked or unchecked. By default it is unchecked.

I have macros enabled and I would like to use the "run macro on" Entry (checkbox select drop down) and on Exit (after drop down is selected)