we need the ability to stop sharing HDMI content plugged into our Teams Room system without needing to disconnect the HDMI cable from the device. . When an HDMI device is plugged in to the system, the content shares automatically to the display in the room . You can hit stop presenting and it will stop sharing the content, until you start a Teams meeting. Once the meeting is started, the HDMI In content shows on the in room display over all camera feeds from remote participants. You can show thumbnails of participants with the gallery view but can't make them the focus. The only way to stop showing the HDMI In content on the in-room display in a Teams Meeting is to unplug the HDMI device This is because we use always connected sahring devices like the Polycom pano - or a room PC IN a skype call on the devices we can turn off HDMI input from the touchpad and the video feeds then go to full screen on the room display
If you open settings in your Microsoft Teams Room system you will see the option to share automatically when connecting HDMI, deactivate this option and you will be able to plugin the HDMI cable to an device without sharing.