# Video: Header Bar in Sessions and Video Functions
The header bar at the top of your session workspace is the central control unit during a live session. It provides a quick overview of all participants, direct options for media control, and intuitive tools for interactive feedback:
- Participant Overview: See at a glance who is attending the session at any time (including your own display).
- Quick Feedback: Use emoticons for straightforward interaction with moderators and the group.
- Flexible Video Display: Customize the video display individually – enlarge, reduce, or undock it as a separate window and move it freely.
- Device Control: Conveniently turn your camera and microphone on or off using the buttons on the left.
# account_box Participant Overview & Interaction
In the central area of the header bar, you always keep track of attendance in the room and can actively contribute.
# add_reaction Quick Feedback & Emoticons
Especially in sessions with multiple participants, the system enables quick feedback without interrupting the flow of speaking:
- Open the Emoticon menu in the header bar.
- Select the appropriate symbol, e.g., Raise Hand (pan_tool_alt), to indicate that you would like to contribute.
- Your feedback will be displayed prominently for all moderators and participants immediately.
# mic videocam Controlling Audio and Video Settings
Use the controls in the header bar to control your input and output devices as well as the view of video feeds on your workspace.
# mic Controlling Camera & Microphone (Left Area)
On the far left of the header bar, you will find direct switches for your media devices:
- videocam Camera on/off: Activate or deactivate your own video feed with a single click.
- mic Microphone on/off: Quickly mute or unmute your audio.
- settings_video_camera Microphone and camera settings: Open the settings to select the appropriate camera/microphone.
# aspect_ratio Customizing & Undocking the Video Display
To ensure you always maintain an optimal view of the workspace and shared content, the video display can be flexibly customized:
- Change size: zoom_in Enlarge or zoom_out reduce the video stream as needed.
- Undock & move: pip_exit Detach the video display to move it as a floating window to any location on your screen.