How do you call a meeting? I've look for the option and couldn't find it. The only way I've been able to go to mementos or to a palace is if one of the team mates brings it up, and that doesn't happen every day. Last night I had about a week to kill and didn't have the option to go to mementos.
to call a meeting you simply travel to the current hideout.
also if you have mementos needing investigating you have to view requests and discuss before you are allowed to jump in...



Might as well call 
Smarten up Nas.


one of the DLC persona's is the best persona in the game
, Kawakami