SharePoint Creating Groups

In SharePoint products, group is a security term. With respect to managed metadata, a group is a set of term sets that all share common security requirements. Only users who have contributor permissions for a specific group can manage term sets that belong to the group or create new term sets within it. Organizations should create groups for term sets that will have unique access or security needs.

Create Group

Go to Central Administration -> Application Management -> Manage metadata Service applications

Right click on the  menage metadata service, then click on new Group

Our group was created like below