Unibash is a group of teachers, selected for their competency in one (or multiple) areas of Toribash. They hold classes in said subject areas and also help grade tests in those subject areas for the giving out of the achievements associated with the tests.
Uniteam's job was to serversit in beginner rooms and help out beginners. They also held unitournies which were tournaments for low belted players. And yea, they got merged with the Gms.