p5rGuide
Confidants will occasionally invite the Protagonist to some outings, which can be good occasion to collect some points. They will also sometimes appear in Leblanc and propose to spend time with them.
This page contains a list of all such interactions throughout the game. If you want to see only interactions with a certain Confidant, go to their page in Confidants section.
Invitations
Invitation
Event
Description
Inviter