It follows our usual invoicing process. In short, the person submitting an invoice to Edgeryders assigns a Dynalist task to authorize it to the project manager. The project manager authorizes it (in FreeAgent), and then the payment manager pays it.
(And, although we never dealt with that case explicitly yet, it is no longer an issue if the project manager authorizes their own invoice. The “two directors rule” for payment authorization is a matter of the past by now.)
See here for the full description of the process: