Proper way to point remote sites to correct DFS shares.

We have 9 sites connected via MPLS and three of those sites have a server with DFS shares that are synchronized across all three servers. Let's say these are sites 1, 2, and 3. What is the proper way of telling sites 1, 2, and 3 to use their local server's DFS share, while pointing sites 4-9 to site 2's DFS share since it has the most bandwidth? Do I use sites and services and bundle sites 4-9 into the same site as site 2? Or is there another way I should be doing this?

Thank you