Indeed, if you have 5 droids (or whatever ammount you want), press the hotkeys that correspond to them all at the same time, it will spawn the all
WARNING: Does not work with pets, only droids.
alternate script: /ui action toolbarSlot##;
/ui action toolbarSlot##
etc. etc. where # stands for the slot it is in on the hotbar, remembering slot 1 is actually slot 00 enjoy!!