In HB Classic by default the locations should be assigned to the supplier type. Every single supplier (user) should be assigned to a single table unless there is a sharer relationship.
When tables are assigned to a Supplier
On the H2H system, always the type that has locations assigned is considered as a "supplier".
Supplier group: They provide a service. They have table assigned
Buyers group: They demand a service. They do not have a stable
When tables are assigned to a Buyer
Rarely but sometimes organisers assign tables to the buyer type. As we said the H2H system only recognises suppliers as a type that has a table assigned. In order to accomodate this request we need to do a workaround.
1- Import your buyers and assign a table to every buyer.
2- Create your HB groups
3- Add to the supplier group
group_type: buyers AND
Add to the buyer group