To create historical saves in a sequential pitboss, save the game while logged in during your team's turn. The save will default to the "multi" directory, it can be directed elsewhere in the save game dialog.
To view a team save, go through the multiplayer menu and open it either as PBEM or hotseat. It should ask for your team's password. If it asks for another team's password, cancel out, you don't have the right save.
BTW if we had to switch to PBEM for some reason, this procedure could be used to make such a switch. Playing the turn and sending the resulting output turn would change game modes. It should also be possible to switch a PBEM to pitboss by loading the PBEM save in the pitboss window, but I have not tried that.
To view a team save, go through the multiplayer menu and open it either as PBEM or hotseat. It should ask for your team's password. If it asks for another team's password, cancel out, you don't have the right save.
BTW if we had to switch to PBEM for some reason, this procedure could be used to make such a switch. Playing the turn and sending the resulting output turn would change game modes. It should also be possible to switch a PBEM to pitboss by loading the PBEM save in the pitboss window, but I have not tried that.