so im new to roll20, and im doing a homebrewed class taking the base class rogue and adding in the assassin's shroud ability from 4e and a shadowstep ability from a homebrewed shadow assassin class i found on the interwebs. is there a way to add those things onto my character sheet in such a way that i could click a macro and have the assassin's shroud auto show on my target or would it just have to be manually done each time?