Almost all operations in the remote editor are performed on one or more selected zones or on the zone with edit focus. Several zones can be selected at once, but only one zone at a time can have edit focus.
Editing operations that can be performed on several zones (like deleting), always apply to the selected zones.
Editing operations that can be performed on one zone only (like adjusting the "Lo key"), always apply to the zone with edit focus.
The front panel always shows the settings for the zone with edit focus.