To Create a Graphic Group or Add Elements to a Graphic Group

Select the Add to Graphic Group tool (Drawing > Home > Groups > Graphic Groups split button).
Select the first element.
If the element is not in a graphic group, a new graphic group is created.

If the element is in a graphic group, all elements subsequently selected are added to that graphic group.
Select another element(s) to add to the graphic group.
Enter a data point in the graphic group.