I haven't met a tune that I was not able to use DS etc for my printouts. The Repeats dialog has a checkbox to Generate (insert) new bars that makes re-entry of the chords unnecessary. By default (I think) this is unchecked. This is where lots of people go wrong. For your exercise, try a simple tune and play around with that dialog. Once you have a feel for it, it may become clearer how it works.

Out of curiosity, what song are you working on? Maybe you could post a link to the song where the forum could look at it and maybe help.

R