Settings adjustments to individual headsets can be made locally through admin mode.
To enter admin mode:
Turn on the headset.
Select See All from the bottom menu bar.
When prompted, enter the admin mode PIN using the VR PIN pad.
The default PIN for admin mode is 1234. You can update you admin mode PIN at any time from the Device Manager settings panel.
Upon successfully entering the admin mode PIN, you'll be able to adjust the headset's settings locally. Once you've finished, select the blue admin mode button from the bottom toolbar to exit admin mode.