Grouping entities in a graph simplifies your view of the graph so that you can focus on the essentials.
To group entities:
CTRL + click the nodes in the graph you want to group together.
Right-click any of the selected nodes.
From the context menu, select Group.
The selected entities are grouped together.
This action provides a cleaner view of the graph.
Hover your cursor over a group to see the entities that it contains.
Right-click a cluster of grouped entities to view and to select the same context menu options available for single entities.