ok, so this is the best I can do:
1-highlight surfaces to be grouped
2-go to the box in the top right corner and enter a name (ie. bottom screens), hit 'return'
3-un-click selection of surfaces
4-go back to the box top right, find 'bottom screens' in pull-down menu, click on it
5-selection is now grouped, I am able to move as a group
Next question: I would like to do is basic transformations to the entire selection, scale/rotate. Is this possible?