Video 4. When I turned Pop Up and Modal to Yes for the RelativeTypeF, the form did not pop up when I click on the Edit List Item or direct open the RelativeTypeF.
But Access still remain in modal mode, so cannot click anything, had to restart the program.
Later found out, if turn Pop Up On, leave Modal Off, the RelativeTypeF perform intended function as in the video, it pop up and remain modal over the CustomerExtendedF.