Since you dont have this option by default in MOC 2007, you need to modify following group policy before you could get this option in MOC 2007.
Chat room managers appear in the Participant List only if they are signed up as members of the chat room, they are signed in, and they have joined the chat room.
Managers' names appear bolded in the Participant List.
Activities include the following: The contact is in a phone, voice, or video conversation.
The contact is in a multiparty conversation using phone, voice, or video.
Group Chat reports your presence status and enables you to see the presence status of other people.