I am lost.

I have multiple servers on different locations. Only one of them has
an internet connection. Installed iFolder on two servers. Made two
ifolder user accounts (user1 and user2) User1 has server1 as home
server and user2 has server2 as home server.
What must I do so that when user1 logs on to ifolder his home
directory and data is on server1 and when user2 logs on his ifolder
home directory and data is on server2??

Help?? I am lost.