Grouped annotation will behave as one object when copying, pasting, or moving them. Different annotation can possess different DataSources within the same group.
To create a new group, click the Group Tool. Click and drag the group tool to create an empty group. Annotation can be added to the group by placing the empty group in edit mode and creating new annotation inside it.
To group annotation, hold down the shift key while clicking on each annotation you wish to group. Right click the selected annotation and select Group.