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1. On the Task Bar, Click the Speaker icon on the right hand side.
2. In the popup menu, click the name of your current default sound device in the menu.
3. From the list, select the room's system as your output.  How this will be labeled depends on the equipment in the room, for example "Extron HDMI" or "Crestron HD audio".
4. The volume slider will effect how loud your Laptops sound is, along with the room's volume controls.

macOS 11 and newer

1. Click on the control center icon in the Menu Bar.
2. Click on Sound.
3. From the Output options, select the room's system as your output.  It will be located below the built-in speakers for your laptop.  How this will be labeled depends on the equipment in the room, for example "Extron HDMI" or "Crestron HD audio".
4. System volume will now be controlled solely by the room's volume controls.

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macOS 10.14 and

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10.15

1. Click on the Volume icon in the Menu Bar.
2. Select the room's system as your output.  It will be located below the built-in speakers for your laptop.  How this will be labeled depends on the equipment in the room, for example "Extron HDMI" or "Crestron HD audio".
3. System volume will now be controlled solely by the room's volume controls.

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