2 team rules

Where can I find the documentation regarding the rules of having 2 teams?

Are we allowed to bid on a player of the other team? What is allowed and what not?

its not possible bid on the player of your other team. however its possible to play friendly to eachother and play the same on youth league

Here have topic complete with rules:
https://kickoffboss.com/forum_topic.php?tid=1481&topic=multi-club-management