Layout > Working with Entities > Modifying Entities > To Group, Ungroup, and Regroup Entities
  
To Group, Ungroup, and Regroup Entities
Perform one of the following operations:
To create a group, select two or more entities and then click Group > Group, or right-click and choose Group > Group from the shortcut menu.
To ungroup a group, select a group and then click Group > Ungroup, or right-click and choose Group > Ungroup from the shortcut menu. Any subgroups in your original group remain grouped.
To regroup entities into a previously created group, click Group > Regroup, or right-click and choose Group > Regroup from the shortcut menu.