How to change devices/users which licene are activated

Hi, my client wants to know how to manage front robot licenses without Orchestrator.
I appriciate if someone would give me advice.
I would like to know the followings for both front office license (Node-locked) and (Authorized-user).

(1) How can they deactivate a license for a laptop/user and activate the license in another laptop/user?
(2) If (1) is possible, how long does it takes until UiPath approve this deactivation and activation?