in Pinnacle as part of the overlay properties you have the ability to resize/reposition whichever clip you're editing (either main or overlay track) within the boundaries of the other. the options are centered, full screen, upper right, etc. with the exception of full screen, these options allows you to shrink/resize then reposition a clip within the boundaries of the 'container' clip basically giving you a smaller picture within a bigger picture (pip).
is there a way to do this in VMS?? i can't find any reference to pip in the help file.