Retevis RB20 User Manual page 11

3. Add the order
When the account number is not enough:
If the account quantity not enough support your radios quantity. You can add order then ask your upper level
administrator to assign the account.Click "Order management", then click "Add order"
4. Main group and Sub - group
4.1 Nested groups definitions
Every group can be merged into a new group; it can also be merged into a new group separately; or be
combined with other subgroups. However, new groups that are combined by sub-groups cannot be merged.
The new group that merged by subgroups has all members of the subgroup.
Return the surplus account
When the quantity for account has exceed the radios, you can return the accounts to the upper level
administrator.
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