Party Changes: In Nibelheim Mansion – 2 shown
Character
The type of party change; a character can be named (usually when you first meet them), or join or leave the party; a lead change indicates which character must be in the party at any given time
Type		 Screen Details
Vincent Name Mansion, Basement (Hallway) Use the Basement Key to unlock the door and check the coffin, talk to him about Sephiroth, then talk to him again and ask who he is
Vincent Join Mansion, Basement (Near Hidden Steps) Attempt to leave after naming him