[SM-USERS] Custom timezone

[André]

Hello folks   I can´t figure out how to set a default timezone in order I don´t have to deal with all the support process of instructing the new users how to do it each one of them, you know? It´s a website for the brazillian community, so I´d like to setup the -3:00 as default.   By the way, I tried to find this in the squirrelmail.org website but I didn´t. So I trust your knowledge for that path.   Thanks!   phoenix_fly