This is the Accounts Receivables are of the system. It is for paying of any 'Direct Bill' payments that were made to Bookings, House Accounts, or Group Bookings.

There are several pages that make up the AR Account system, otherwise known as a City Ledger. To create an AR account, first you need to create a company. See the Company section in the Setup area. To use an AR Account as payment, create a booking and associate the booking to a company on the Booking Data Page. Once you have chosen a company that has an active AR Account, you will be able to use this company as the Guarantee method and will be able to select the payment type DB:Company Name in the payments field.
Paying Direct Bill Accounts
We use an open-item invoicing system. This means that charges can be grouped into invoices and then paid off individually. Invoices will generally only be used if the company paying requires it or if there are an excessive number of Uninvoiced charges. If a payment closes out an invoice exactly, it can be applied to the entire invoice. Otherwise, payment must be applied to the charges they are intended for. This system ensures proper accounting.