The League Manager page is like a "Home Page" to manage all the leagues you are an admin of. If you are an admin for more than 1 league your default league manager page will be whichever league you managed last. To change your league admin page you would just click the "Switch Leagues" link at the top right of the page.

You will be able to view stats for : Total Members, Total Matches & Total Tournaments. Below this table is a list of all the admins for that league. On the right column of the league manager has Upcoming Tourney promotions & Upcoming tournaments. 

The shout box is an area for league admins to discuss upcoming events, plans, tourney information or any other type of league news. This can also be used for a chat. You can customize your shout box to your own font color, table height and refresh rate. Note: The shout box stores the last 100 messages.