Okay, so I've never played 4E but I'll try to help. Not many people play it, most of the player base is split between 3.5 and 5. It looks like the actual weapon attack macros are created as Powers, is this correct? In Power Settings, down the bottom of each one is has the macro code it generates. The top line is something like /me uses @{power-1-name} This is an emote command which gives that orange bar, it uses whatever name you have in the dropdown in the chat bar. For a player their options are generally just "Roll20 name" and "Character Name". For the GM you've got loads of options in there. You can manually select the monster from here before you use the ability, or you can use the GM-only command /emas instead. So I think what you want to do, is change that first line to /emas @{character_name} uses @{power-1-name} and it should work. This would require manually changing every power on every NPC sheet. I have no idea if you can automate this in any way, as I have approximately 2 minutes experience with the 4E sheet. Hopefully someone with some 4E sheet knowledge can give you some better guidance!
