A group reservation is one reservation for several rooms for one or more room types for one or more rate groups. The need for Group Reservations arises when a party such as a company or an event organizer, wishes to reserve multiple rooms before the names of the guests are known. Typically, a special volume discount is agreed. The most important part in group reservations is that the block of rooms is taken out of availability. The block then becomes its own subset of available rooms from which individual reservations for the group are made.

The typical flow of a group reservation over time is as follows: