Point of..

Is there an advantage/point to selecting the “executables” and “all application” groups in the D+ computer security policy? Isnt D+ supposed to catch all applications and exe anyways (with out having to select it?)

There are different forms of excutables, .EXE .BAT etc.
I would think that if you add all executables ( I have that selected ) That it will monitor everything that tryies to execute on your pc that is in the excutable list, not just .EXE