It will guide you with dns settings, there will be cname involved
Discussion
Custom domains section in site settings
You should make a screen share of the process from chosing a existing long form event ID, to selecting that theme, to setting the domain on npub.pro. Just make as if i was retarded.
Still super confusing.
You can't choose events individually yet, only by hashtags and kinds. Manual selection coming soon. And yes I agree it's still confusing