To register a Devolutions Launcher license in Devolutions Server, you need to add a license and assign it to the users.
In the web interface of Devolutions Server, go to Administration – Licenses.
Click Add to add a new license.
Paste the License or Import it using a LIC file. You have the option to enable Auto assign.
In the Assigned to section, manage your users' license access.
Click Add to save.