mass action - Collective sale feature

I wanted to know if you could make a collective sale (mass action). I realize that the sale is as follows: the seller provides the booking of buying a product that will actually be completed to achieve a minimum threshold of products sold. The mechanism is usually adopted in the sites of solidarity acquired through the purchase of coupons. collecting reservations about the products they are able to produce sales at discount prices. You can you tell me how I can achieve a sale of this type with Hikashop? ... It is expected a sale of this type or only through immediate payment of a deposit?