All users are capable of receiving video.
The video option only allows for point to point video so the first two participants who join in a meeting will only be able to receive each others video. The user capable of sending video must be sending video to you. On the Video tab, click the Automatically receive video at the start of each call check box to select it. On the Video tab, click the Automatically send video at the start of each call check box to select it. Making an Audio and Video Connection NetMeeting establishes a video connection automatically at the beginning of the call if the Automatically send video at the start of each call check box is selected.