First, you'll need to create a GitHub OAuth app for your organisation.
From GitHub, click on your profile picture and chose "Settings":
Then "Developer settings" from the left-hand menu:
Then "OAuth Apps":
And create a new OAuth app:
Give it a name, and a homepage URL. The authorization callback is the important bit. It needs to be in this form:
[your-nx-cloud-url]/auth-callback
# for example
https://my.nx-enterprise.url:8080/auth-callback
Once you create, keep a note of the Client ID:
And then generate a new client secret, and save it somewhere secure (we'll use it in a bit):
It's now time to enable auth on NxCloud. Refer to the auth guide here for instructions on configuring your Helm values file.