Managing Host and Panelist Views

[jiggy123]

Hi, I'm conducting a webinar and want to:

a) present a few slides as host,

b) turn it over to a co-host to present a few slides

c) then have a panel of 4 people take over, with all 4 always on screen/video,

d) then take back over as host

Is this possible? How do I control the camera that way?  And if a host turns off mic and camera, do they still show up as a 'box' on the screen?