Retevis RB20 User Manual page 10

1.1 for third level admin, add the group first, as below
2. Add the device
Note: Only third level admin can add the device, please kindly contact your upper admin for the Account. There
are two method to add the device: add one by one and add in bulk. Add the device one by one:
Lowest
2.1 Add the device in bulk
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