Promotion to the user to check that comes with the minimum number of people you selected. In order to attract a group of customers to come to your business.
Promotion to the check-in of the user who came up with the minimum number of dude like you. In order to get dutklum the customer's friends come to your business.
The promotion will be to the check-in of a user, according to the number of people with a friend minimum that you set in order to attract customers to your group of friends, and you and your business use.