Auto Leagues

I have a question ... If i see a Auto League XXXX in the League Directory that i'd be interested in, how do i join the league? I've been playing SOM a long time and don't remember playing an auto league. Feel like i should know this. Probably something simple i'm missing.

Create your team based on the criteria of the league you want to join. Then Fill Out Your Draft List...Rank Your Players....and Choose Your Ballpark. The final requirement is to Choose A League. Click on that and all leagues that meet the criteria you chose will be listed.