[otrs] Allow users to register them selves from the main otrs screen ?

Hello list I've installed the system and it's great, thank you devs ! I wish to know how to configure it so that my users (internal LAN) would be able to connect to the system and register them self. I plan to use the system as a "display and request" work load for company employees vs. the tech support guys. How to enable users to register them selves into the system and also assign them to 1 default (unprivileged) group ? Thank you a lot. -- Cheers, Maxim Vexler "Free as in Freedom" - Do u GNU ?