Click on the "Club Management" tab, and then click "Teams".
Click the "Registration" tab at the top of the screen.
For the league you want to register for, click "Register", and then select the fee type in the drop down. If the league you are looking for doesn't show up automatically, you can search league by click the "All Events" button.
Select your preferred division, IF required, (which most leagues are), then click the "Application Form" button to start the registration for that individual team.
Repeat step 4 for all teams you need to register in this league.