When you purchase iOS devices, the reseller sends information to Apple and the devices will appear in the Apple Business Manager.
The default MDM server can be set for a specific type of device. All activated devices will be assigned to the specified MDM server.
How to Set Default MDM Server
- Open Apple Business Manager
- Navigate to Settings and select Device Management Settings
- In the Default Device Assignment, click on the drop-down menu and select the default MDM server for each device
- Click Apply and Done