With Windows Meeting Space, you have a few choices as to how you can join an existing meeting. If you’re on the same local (subnet) network as those hosting the meeting, and if the host allowed the meeting to be visible on the network, you can simply browse for the meeting. You can also join a meeting by accepting an invitation or by using an invitation file that someone sent or otherwise made available to you.
If the Invitation Details dialog box appears, click Accept.
If you receive an e-mail that includes an invitation file, or if you have access to an invitation file, open the file to join the meeting immediately, or save the file for later use.
Type the password that you were assigned, and press Enter to join the meeting.