I ma having some trouble using the build in users espace with a multi tenant app. The other espaces I have created seem to work out of the gate multi tenant and users can only access there own information however when I create users from one tenant the other tenants can see them. what am I missing?

Same issue here, 

I would like a (really short ;) ) howto on creating multi-tenant espaces and how to assign users to specific tenants.

Multi-tenancy works great, just the user-parts is a bit vague to me..

Hi James and Hans,

the Users doesn't support multi-tenant eSpaces.
In multi-tenant scenarios you need to add your own login and user management flows inside your espaces.