Thread:Deyuaru/@comment-24050152-20160305014118/@comment-24050152-20160305015644

http://fategrandorder.wikia.com/wiki/User_blog:Deyuaru/Update_Notes_(From_29/01/2016_to_present)

More detailed info in that link, but ill briefly explain.

When the update happens, You can set what Servant you want to let other players use as support, for each class, total of 8 currently, maybe Shielder and Ruler shares the same slot.