If you want to copy another cue you can select the copy button choose the cue you would like to copy and then select a new space for that cue to go to. If you want to copy values that are already coming out of another light you can use a feature called align.
Check out this page of the manual, it should help a lot - manual.avolites.com/docs/cues/editing-cues?_highlight=update&_highlight=button#updating-stored-values-and-palettes-used-in-a-cue