In the settings of each cooperation you can choose different settings.
First you choose the cancellation policy you already created when you created the property.
Next is to choose the price agreement, that is according to the prices you set up when creating a property.
Here, you can also choose to give this travel agency BAR prices (Best available rates), those are the same prices you are pushing out to OTAs such as Booking.com etc.
You can also put a setting on how many rooms this travel agency can book in one booking. In the screenshot below there is a setting of 1 room per booking. You can set it to the number you desire or you can have it unlimited.
You can also have a setting to notify the travel agency when you require a name list/rooming list for this booking.
There is also a messaging feature within the cooperation, which will only be shown on cooperation level.