I shouldn't have to create a separate adjustments account for each type of adjustment. If a night has already closed, and then the rate needed to be adjusted by a supervisor because of an error, then their adjustment should be just a Rate Adjustment - automatically contributing to room revenue. I shouldn't have to use the billing tab to then manually calculate rate vs tax breakdown, and post a separate "unbookable service" etc.
Also, refunds / adjustments should be able to be posted to the specific reservations even if they are closed out already. It should be possible to open closed folios and post again so that there is tracing of what refunds were for.
This would help avoid staff issuing refunds to themselves under another guest's profile.