From IceBB Wiki

To administrate IceBB, click on Admin Control Center in your user bar.
Once you get in the top portion of the screen will be links to edit your settings.

Settings	Users and Groups	Forums	Customize	Post Display	Advanced	Root Admin
General Settings	Manage Users	Manage Forums	Skins	Smilies	Ban Options	Logs
Advanced Options	New User	New Forum	Languages	Word Filters	Manage Caches	SQL Manager
Security	Prune Users	Manage Announcements	Plugins		Manage Tasks
Login & Registration	Manage Groups	New Announcement			Recount
Board On/Off	New Group	Multi-Moderation
Search Engine Spiders	Manage Permission Groups
Board Rules	Manage Ranks
Cookies	IP Tools
Tagging	Bulk Mail
Trash Can