before you start interactive multicasts as the chair, set up the meeting offline in the multicast dialog box.
· to set up the multicast conference
1. press [multipoint]. the multicast control dialog box opens.

2. in the multicast control dialog box, set the properties according to your meeting.s specific requirements (see the illustration on page 7-3).
navigate to other tabs to change other properties if necessary. see the following sections for descriptions of these properties.
3. press [ok] to apply the changes and close the dialog box.
the following sections describes the properties that define interactive multicasts:
· session
· answer
· props
· viewer