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Overview
While in a Zoom meeting, the host or co-host can use the Stop Video or Remove functions for disruptive meeting participants to disable their web camera stream or remove them from the meeting.
Detail
As the meeting host or co-host, hover your mouse over the disruptive participant in the Participants list and click the 3 dots, then Stop Video or Remove.

You can also stop someone's video by right-clicking their video stream and selecting Stop Video.
