The document describes the billing process in Therapistmate Software, including linking timesheets to authorizations, setting timesheets as ready to bill, creating billing batches within date ranges, editing batches, generating invoices, and posting invoices to Sage 300 ERP accounting software. It also discusses billing settings like exclusions, distribution codes, and batch statuses. Finally, it mentions that Therapistmate can generate ABA billing forms like the DDS report, CMS 1500 form, and 837 EDI file.