By default, the web meeting room is displayed in a standard browser window along with the display of all of your operating system elements, such as the Start menu, the Close Window button in the title bar of the web meeting room window, and all other applications.

However, you can choose to view the web meeting room in full screen mode, which will hide everything on your computer except the web meeting room.

User Guide for Cisco Unified MeetingPlace Express Release 2.0:

http://www.cisco.com/en/US/docs/voice_ip_comm/meetingplace_express/2_0/english/user/guide/umpe20.html