Random prefabs in ROI(Region of Interest)

[AuroraJump]

with past days,I want to putting some prefabs on cabinet with randomizer(like drinks putting on the cabinet in real world),But, I can't find some settings to do it.In randomizers,do the ForegroundObjectPlacementRandomizer has some args for setting ROI or automatic put the prefabs (like drink-greentea-itoen ) on the cabinet .are thera have some easy way to do ? or just manually put prefabs on cabinet.or only write some C# scripts with my rules? waiting for your answer, thanks!!