Dormitory vs Bed in Dormitory

I am trying to set rate plan and room details. I have 18 bunk beds which gives me 36 beds. When I try to do Bed in Dormitory and someone searches for 3-4 people it will show I have no availbility. If 1 person searches it will show available and they can add more beds.

When I do Dormitory and put 36 beds avialable. Then for each person that books they get 36 beds. I have attached two images to show the issue I am having.


I have emailed Booking Support twice but the answers have been generic.