Grouping subdirectories under a custom subdomain

Greetings,

I am wondering how to group all subdirectory sites under a custom subdomain. To explain simply,

I would install MultiSite on parent.com and allow new sites to be registered under subdirectories, but instead of the URLs being parent.com/child, say I want the URLs to be blogs.parent.com/child.

An easy solution would be to install MultiSite on blogs.parent.com itself and have another WP install on parent.com, but this would mean that the users would have to maintain two usernames and separate logins for both.

So is there a simple option to have the sites grouped under a custom subdomain, or have the usernames merged and have them the same for two different WP installs?

Thanks a ton. :slight_smile: