You can create a selection group by selecting objects with the Create New Selection Group command.
Location of Create New Selection Group Command
After selecting the object, you can access the Create New Selection Group command from the menu that appears when the right mouse button is clicked .
Select the objects to be grouped.
Click the Create New Selection Group command from the right-click menu .
Name the selection group in the dialog that opens.
Your selection group will be created.
You can see your selection group from the Group List .
Selecting objects to group
Clicking the Create new selection group command
Naming the selection group and creating the selection group