-User names will be blue in color, while non users are greyed out.

Select the chatroom you want to chat in and chat away.

Under the chat button, Select the chat room you want to delete, tap on the little wheel button thing. (screen shot) Delete button is highlighted in bright red. (screen shot)

You can not delete a chatroom created by the User.

Select my leagues, under Leagues you will find schedule highlighted in Orange on the right of the league. (Screenshot).

-Only if you are the league owner or made commissioner by league owner.

-Advancing league action can only be performed using Companion App or within EA game title.

-Yes, only before Commissioner has advanced the league

-Sure, but you must invite through EA game titles first.

-If you are the league owner then yes. If you are not the league owner that feature is disabled.