Domain name instructions
From TheInterWiki
Once your wiki is up and running and you want to make it official with a domain name and SSL certificate you will need to follow these steps
Domain name
You must first decide on a domain name. MyWiki.com is probably taken, so choose something unique to your facility or Physicians group. If there is an existing domain name that you are adding the wiki to, we suggest you use a sub-domain. It doesn’t cost extra to do this, you just need to add a record in the DNS settings=s for the existing domain name.
Example: www.HeartPhysiciansGroup.com is the main website for the group, you can set wiki.HeartPhysiciansGroup.com to go to the new server.