A zone object is usually a room, although it doesn't have to be. If you
have a room with the dbref #1234 that you want to use as a zone object,
and an object called 'apple' that you want to be a part of that zone,
type '@zone apple = #1234'. If you have a room with the dbref #4321 that
you want to be a part of that zone, the type '@zone #4321 = #1234'. If
you want other people to make their stuff part of your zone, then set the
zoned flag on the zone object.
If there are exits on/in a zone object, then those exits will also be
available in any room that's a part of that zone. If an object is part
of that zone, then anyone carrying that object should automatically
drop it upon leaving the zone.