[Alana Member 11 September 2018 Alana Member]

Hey! You can auto apply a policy to pre-enrolled devices only. So, this can be done if you pre-enroll the DEP iPads by checking the Add as Preenrolled Device box in DEP settings and follow the steps below:
1.Make a device group with all your DEP iPads.
-Go to Management > Click on Device groups > New Group.
-Name the group > Add devices to the group > Save group.
2. Associate the required policy to the device group.
-Go to Management > Check the Device group.
-Manage > Associate policy.
-Check the Policy > Click Associate.
Upon enrollment, the policy take effect on the devices automatically.

Cheers!
Alana Bardot
Hexnode MDM.