Example of How to Register K3OS Cluster with Rancher 2.x

Is there a simple example of how to register a K3OS cluster with Rancher 2.x?
I thought it’d be as easy as installing into the cluster a helm chart for the “rancher-agent” container with values.yaml pointing to my Rancher server but I don’t see such a chart anywhere.

I found a more complex script for registering but surely there is a simpler official way to register Rancher/K3OS with Rancher/2.x?