When removing a desk, start by identifying the sensor attached to the desk so you can look it up.
Once you've done that, go to ADMIN and Sensors, and click the small pencil icon next to the sensor.
Then select 'More edit options' and click Deactivate. Follow the dialog. It takes a little time to deactivate, so please be patient.

After removing the desk, consider whether your floor plan needs to be updated.
Save battery: When the sensor has been taken down, it's a good idea to store it near a Cloud Connector. This prevents it from entering booster mode and helps save battery life.