A separate feature to create / generate an invoice with the option to apply to a proposal, as many times certain situations come up outside of the scope of the proposal that need to be invoiced. Or it may not have anything to do with the proposal, but its for the same client or job / site. We had an issue come up where we installed audio, and while we were there, the client had asked us to fix an issue with their video and we did. It would have been nice to invoice through Portal for that issue to keep it all in 1 place, instead of having to create another proposal.