# Using the screen share control bar
<a name="share-controls"></a>

When a meeting host or attendee shares their screen, the screen share control bar appears: ![\[A dark gray bar with four icons.\]](http://docs.aws.amazon.com/chime/latest/ug/images/meeting-shared-screen-controls.png) 

Moving from left to right: 
+ **Hide all video** – Hides all attendee video tiles, including yours.
+ **Zoom in** – Zooms in on the shared screen.
+ **Zoom out** – Zooms out of the shared screen.
+ **Undock screen to share in a new window** – Moves the shared screen to a separate window. Other attendees continue to see the undocked window. To re-dock, close the undocked window. The shared screen appears in its original location.