> ## Documentation Index > Fetch the complete documentation index at: https://help.coresee.com/llms.txt > Use this file to discover all available pages before exploring further. # Speaker, Mic, Cam Before you join a room, the Lobby gives you a chance to check and configure your speaker, microphone, and camera — so your setup is working the way you want before anyone else can see or hear you. If you don't get a chance to adjust anything in the Lobby, you can always change these settings once you're in the room. ## **In the Lobby** Each input and output has its own on/off toggle and a device selector, so you can choose between multiple connected devices. The microphone and speaker also include a testing tool so you can confirm everything is working before you join. **Turn your speaker on or off** Click the speaker button to enable or disable audio output. When off, you'll enter the room without hearing other participants. **Select your speaker** If you have multiple audio output devices — such as built-in speakers and a connected headset — use the dropdown to choose which one to use. **Test your speaker** Click the Test button to play a short audio tone through your selected output device. If you hear the sound, your speaker is set up correctly and you're ready to join. If you don't hear anything after clicking Test, make sure the correct output device is selected and that your system volume isn't muted. **Turn your microphone on or off** Click the microphone button to enable or disable your audio before joining. **Select your microphone** If you have multiple microphones connected — such as a built-in mic and a headset — use the dropdown to choose which one to use.
**Test your microphone** To confirm your microphone is picking up sound, speak and watch the input level meter. If the bars move and animate when you talk, your microphone is working correctly. If the bars don't move at all when you speak, check that the correct microphone is selected and that your browser has permission to access it. **Turn your camera on or off** Click the camera button to enable or disable your video before joining. When on, your camera preview is visible in the Lobby so you can check your framing and lighting before entering the room.
**Select your camera** If you have more than one camera connected — for example a built-in webcam and an external USB camera — use the dropdown to choose which one to use. ## **Once You're in the Room** You're not locked into the choices you made in the Lobby. Every control there has a matching control on the bottom bar, so you can switch devices or turn audio and video on or off at any point during your session. Bottom Bar ### **Sound** You can turn on or off the sound coming from other attendees within the room. This doesn't affect whether others can hear *you* — it only controls what you hear. By default, audio during your session comes through your device's speakers. To change where it plays, click the arrow to the right of the sound icon and select the connected audio output device you'd like to use. Your speaker settings update automatically once selected. ### **Microphone** You can mute and unmute yourself at any time by clicking the microphone icon. By default, audio is picked up through your computer's microphone. To change which microphone is used, click the arrow to the right of the microphone icon and select your preferred device from the list. Your microphone settings update automatically once selected. ### **Camera** You can turn your camera on or off at any time by clicking the camera icon. By default, video is received through your computer's camera. To change which camera is used, click the arrow to the right of the camera icon and select your preferred device from the list.