This can be empty, or contain a sample - it doesn't matter for now.
2. Use the Sample Browser to add one, or several (see below), sample(s).
If the zone contained a sample prior to loading, this will be replaced, both in the zone and in the sample memory, unless the sample was also used by another key zone, in which case it will be kept.
If you loaded several samples, one of the samples will be assigned to the key zone, and the other samples will be loaded but remain unassigned.