Editing Artist Help:Addressing Grid (section)

=== Selecting multiple fixtures ===
You can select multiple fixtures to move at once by clicking on each required fixture while holding the keyboard Ctrl key.  Each selected fixture is indicated by highlighting the name of the fixture in red. 

Once the fixtures have been selected click on the fist cell of the first fixture and drag to the required new location.

The selected fixtures need not be contiguous (i.e. with no spaces) but they will be sorted contiguously to the destination address in the order in which they were selected as indicated by the white number in the highlight fixture name.