hi I wanted to edit a large sandy area divided into small areas, is it right that I: I: - set Relation type as boundary instead of multipolygon for small and large areas areas - put tag "natural:sand" for large area area - add small areas as members to large area and set it as "subarea" "subarea" is that right or i can not use boundary type for natural places, and is it right to use "subarea" as Role to members of multipolygon?

hi I wanted to edit a large sandy area divided into small areas, is it right that I: - set Relation type as boundary instead of multipolygon for small and large areas - put tag "natural:sand" for large area - add small areas as members to large area and set it as "subarea" is that right or i can not use boundary type for natural places, and is it right to use "subarea" as Role to members of multipolygon?