Can't be done! One of my biggest gripes with AC but they say "We are not a PM pkg." While this is true (and they are working on something) I have missed posting numerous co-pays because they can't be entered until the note is complete and signed off. A simple suggestion would be to at least add a field to the sign-off screen along with Quick Codes, etc that would allow the co-pay to be entered. This would at least alert us to the fact that a co-pay entry may be pending.
