OSA adding compute without deploy host

Hi all, I have a controller and 2 compute setup that was deployed some time ago with OSA. It's been running fine since it was deployed but we now have the need for more compute and I was looking at the deploy host to add a compute host to the cluster. Unfortunately it seems the deploy host was repurposed and I have lost all the config. So two questions, 1) Is it possible to manually add a compute to the cluster (I fairly confident this is a yes) and 2) if so is there any documentation or how to that someone could point me to/share? any help would be greatly appreciated. Regards,Derek