You CAN enter group edit mode IF you are on a PC, have a shortcut key-combo set to do it... AND activate that shortcut using a WinScript key-stroke script... BUT it's not ideal
See this http://forums.sketchucation.com/viewtopic.php?p=266830#p266830 and http://forums.sketchucation.com/viewtopic.php?p=11776#p11776