Usage of DOI in OMP 3.2.0.3

Hello!
i discovered, how to generate and assighn DOI to monographs. But i can’t discover how to send metadata 2 crossref.

So i have question: is it possible in auto-mode, or as described in some topics, i need to generate some kind of xml an upload it to crossref in hand-mode?

@asmecher i have registered doi in manual mode. as i understand there is no plugin at this time?