Until now, Intune/Endpoint Configuration Manager administrator accounts had to be licensed to be able to access the Intune/Endpoint administration portal and manage the service.
Well, good news, this license requirement is no longer needed.
You can now enable administration access without licensing your administration accounts.
To start enabling this access, logon to your Intune/Endpoint Configuration Managed administration portal (https://endpoint.microsoft.com/) and access the Tenant Administration\Roles blade
There, access the Administration Licensing blade to turn on unlicensed admin access
NOTE once this unlicensed admin access is turn on you can not turn it off
Then you can remove licenses assigned to administrator accounts