This behavior is related to the license type that is in use in the contract. If your license type is Concurrent-unmanaged
, you will not be able to assign a specific license to a user or group. Unmanaged Licenses don't require any delegations of permissions to clients. The client machines can check-out seats if they have established communication with the server.
If you need to assign permissions of a license to a specific group of clients, you will need to evaluate the option to change the license type to a User or Computer-based format. If you decide to change the license type, you can send an email to email@example.com
with the specifications of the changes.