Multi-domain Management is a BetterCloud feature that allows admins of companies with more than one domain to easily manage their Users and Groups. While in the User or Groups Summary Page, click All Domains to choose from a specific domain or All, giving you the ability to filter your results more efficiently.
Important: If you have subdomains, there must be at least one active or suspended user within the domain (i.e. an active or suspended user with a primary email address associated with that subdomain) for it to be visible in BetterCloud. If you'd like to view your subdomains in BetterCloud, add one user to the subdomain in the Admin Console, and then run a BetterCloud sync.