This tip concerns the monitoring of IM users in the GUI with FortiGate 4.0 MR2. In this version of firmware the User and Monitor sections for IM are automatically hidden if there is no user created for any IM protocol.
FortiGate 4.0 MR2
#config imp2p aim-user
#edit test-user
#end
#end
User->User->IM
User->Monitor->IM