Call Manager allows you to utilize "Breakout Rooms" in order to divide your meeting participants into groups for more detailed conversations.
To do this, just right click on a participant's avatar, hover over "Send To" and select a room. This will send the participant to a separate room from the main meeting room.
As the meeting moderator, you have full control over all of the breakout rooms.
If a meeting participant joins the audio portion of the meeting on a different platform as he joined the web portion. This will cause him to show up twice in the main meeting room. You can merge these two instances by simply dragging and dropping one to the other.