Configure Direct Billing for a Group
To configure direct billing for a group, navigate to Groups > Manage Groups > Select Group > Summary Tab and select ADD BILLING INFORMATION. From here, you can apply routing, which will apply to all reservations in the group. However, these billing instructions will always send the charges from the guest reservation back to the group account. You can't configure it to go to Bill #2 on the guest reservation.
On the guest reservation, however, you can route the charges to both the group and another bill window if required.
The guest charges will then appear on the Transactions tab of the group. To pay the charges to direct bill, first select the green wallet button.
You can then select Direct Bill as the PAYMENT TYPE, then MAKE PAYMENT, and finally PAY TO DIRECT BILL.
With this functionality in mind, you can consider routing all reservations to the group account. Instead of settling each individual invoice, you can settle the group account once a week to A/R, for example. It all depends on the type of reporting required by the group for their guests.