Most Council operated cemeteries have at least two and up to ten designated areas for ash interment. Often each of these areas have different size/type requirements. These vary from small plaques on existing walls or concrete garden strips, solid granite recumbent desks or upright headstones on a matching granite base.
How many sets of ashes that can be interred in one plot depend on the area/plot chosen. Please check where ashes are to be placed, before selecting a memorial.
Hawkes Bay Council links:
CENTRAL HAWKES BAY: https://www.chbdc.govt.nz/services/cemeteries/cemetery-database/