If you have additional leagues you operate on which are not under your 'dropdown' then you can add them in from "admin home" providing you know your username and password
1. Click on the button from Admin home which says "View your leagues / Add Full-Time sign in"
2. Input the "Username and password" of the full-time account you wish to link to your new login then click "Sign in & link"
3. From the username & password you input, the system will then ask you to confirm the link. Once confirmed you will then be able to sign into this additional account using your FA Email Address & Password