Selecting a group

So when I select a group in my groups menu, there must be some way to tell it to select all the vertices in that group, right? I tried hitting the ‘select’ button under the drop-menu with the names of all the groups because that seemed pretty intuitive, but it didn’t seem to do anything. How do I select all the vertices within a particular group?

Did you assign the vertices to that group to begin with or just create the group and not do that step. I’ve justed tested this and pressing Select, selected all the vertices I had assigned to that vertex group in my object.