You can hide or skip one or more groups in the Graph Pane. When a group is hidden, space is reserved in the graph pane for the group's vertices, but the vertices and their edges are hidden. When a group is skipped, its vertices and edges are completely ignored when the graph is shown. No space is reserved for the vertices in a skipped group.
Hiding and skipping groups can be an effective way of reducing graph clutter when you want to focus on certain groups while ignoring others.