It's not what you've got, it's how you use it. I know many keyboard players, and I can tell you the size of thier wallet has nothing to do with their playing ability. (I know some that have very expensive keyboards and have no idea half the features of them, but buy them because that's what so and so uses so it must be good) Anyway movin on..
Google is your friend..
http://www.roland.com/products/en/JUNO-D/ According to Roland yes it can. There also seems to be a FAQ section which may give you the answeres for which you seek.
Sadly not having seen / touched / used a Juno D I can not tell you how to do it.
Suggest having a night in and going though the manual.
Best of luck