Shared Forums for Members


I like the Help Support and FAQ theme:

I am looking to create a support forum where members can ask any support questions. However, the tricky part is that I would like to have the forum integrated as a part/section/page of the wordpress admin.

I could create a seperate support website at http://help.domain.tld, but then people would have to create a member account and sign into that support forum.

What is the best way to integrate a support forum and the WordPress admin? Is there is stable way to share the user accounts so that users don’t have to log into the support site?