I am currently using a unifi cloud key gen2+ version 6.X which is already set up and working well. Watching instruction videos, it seems that the integration wants you to set up a new instance of the cloud controller within HASS and then migrate your current system to it. Is it possible to install the Unifi integration without migrating to the HA instance and still have various devices on my network as entities within HASS such that I can toggle various clients (e.g., my son’s gaming PC) and setup automation?
That is if you want to move to the HA add on version of the controller. Here is how you can add your current system to HA. https://www.home-assistant.io/integrations/unifi/
The Integration doesn’t care about where the controller exists as long as it can talk to the controller over a network link.