I mean you said you checked the documentation (
admins.cfg and
admin_groups.cfg) which provides you with the same informations as Bacardi posted?
Now you ask about
Sourcebans when I already told you that you won't have to mess around with configs by hand but use the webpanel to change things.
Sourcebans is using the same format and functions but just saved in a subfolder with a prefix (sourcebans/sb_admins.cfg, sourcebans/sb_admin_groups.cfg etc.)