There are two types of login:  one to enter match results, and the other to complete on line entry forms.  They are known as Team Login and Club Login respectively.  

Team logins

The team login is only available during a season.  

There can be multiple Team Login registrations to enable any club member to enter match results for any of the club's teams.  

An individual with the same email address can have multiple registrations to enter results for multiple teams provided the password is unique for each team.

Club Logins

The club login is available when League and/or Competition entry forms are available.  There can only be one Club login per club.  If it becomes necessary to change a club login, the current login owner should delete his/her, and then a new login registered.