Squads are way different than a clan or community.
A squad is a group of friends (Max 4) joining together, All of them have equal rights to edit their squad or kick people from it.
At the moment squads only work for the TNL league.
How to join a Squad
To join a squad, First you must have its joining password. Ask the squad members for it. Once you have the password, Goto your league settings, Scroll down the page to the "TNL Squads Options".
There are 2 fields. Enter the squad acronym in the first field and its password in the second field and click on the "Join Squad" button and you are done.
How to Create a Squad
Again in the TNL Squad options, You will see the "Create Squad" part.
Pick an acronym for your squad (Max 5 characters).
You can set a full name, A flag also.
And at last pickup a join password and click on the create button.
Once the squad is created in the same page, You will see your squad edit options and people that have joined it.