Buffer an already existing zone of your organisation or a registered
zone:
- Select zone: pick a zone from your organization’s list, or, if the slider is
enabled, an officially registered GeoZone
- Buffer distance: slide, or, if the slider is enabled, enter the distance you want to
buffer the zone with

You can also add a negative buffer
distance to make the zone smaller.
When scrolling down, a preview will show
the buffered zone:

The buffered zone encompasses the
initial zone area along with the added buffer. In situations involving a
negative buffer distance, the original area actually becomes smaller.