You can combine several objects of any type to make a group.
Select the objects you wish to combine.
Thereafter
When you now select one object of the group, the whole group gets selected.
If you have selected a group, you can
the group in the same way as you would perform these operations on the individual objects.
To break the group (degroup), select it and
You cannot assign properties to a group.
However, you can access an individual object of a group by a "double-click with the left mouse button". This opens the Properties window of the respective object, on which the mouse pointer is currently present.