I'm acting on @misterengagement's behalf, he seems to be otherwise engaged :)
if I were to use that command, I would then be sending a specified amount of ENGAGE tokens to someone. Which if I were to do now, would go to misterengagement? From that account to that account?
Correct - that might be an interesting test :)
whose ENGAGE tokens are being rewarded. Mine or the misterengagement account?
Yes, misterengagement's.
I guess to authorize me as a duly deputized ENGAGE posse, and to prevent me from just handing them out willy nilly. :)
Correct again :D
Can I do something like "!_ENGAGE_amount_username" to specify where they go? And if I fail to put in an amount, does it default to 1 ENGAGE?
Not at present, they will go to the account you are replying to, and you will need to specify the amount for the command to trigger. Good luck!
!ENGAGE 20