Once you create group bookings, entire revenue is kept under "Unpaid Items" on the left hand side of the billing screen. Each reservation has its unique Stay number.
In order to assign room charges to the particular guest you need to follow these steps:

- Go to the Billing of that particular guest
- Find based on Stay confirmation number your booking and move that particular charges to the right hand side of the screen.
Now it belongs to that guest.

In case you want to assign those charges to the another customer/company/TA you need to add one more step:

- Click on "Assign" button and select relevant option.