It gets a little frustrating that there's no direct link from the official forums to the Square Enix Management System website. To get there from the forum, the fastest way is to either:

1) Log out from this website, because then the link appears for you to log in.

2) Click the link to the playonline website, and from there click the link to the SEMS.

It's only a little thing, but easy to implement and would be greatly appreciated.

Many Thanks