Group and ungroup objects
To group several objects, select all objects you want to group by pressing Ctrl or Shift and clicking every of these objects:

Then do one of the following:
- On the Format tab, in the Arrange group, click the Group command:
- Right-click one of the objects and choose Group -> Group from the popup menu:
Word puts a single box around the objects instead of a separate box around each object:

To ungroup grouped objects, do one of the following:
- On the Format tab, in the Arrange group, click Ungroup:
- Right-click a grouped object, and then choose Group -> Ungroup from the popup menu:
See also this tip in French: Grouper et dissocier des objets.