How Can I Select Multiple Combo Boxes

I'm trying to redesign a few docs with combo boxes. I need to move the boxes but don't want to have to individually select each box to move it. How can I select multiple boxes?

Right click one, then Control + Left click to select as many as you need.

With that method I still have to select each combo box individually then move them as a group. I want to select multiple boxes at once. Similar to dragging the mouse with the left click down or selecting a range with the shift button.

I don't know of any way of doing that unless they were all grouped to begin with...

It might be quicker to select them on the Selection Pane though,

Home tab, Editing section, "Find & Select" and click the selection pane. You can only control select there but it might be a little easier.