[Rey_a]

Yes you can.

Use the snippet tool as described on page 92 of the manual. It creates a new score, based on an existing one. You can specify a page range or specific pages of the original score for the snippet if you like. It will not duplicate the original pdf of the original score, but it will use it again. So If you create 10 snippets of a master score, which happens to be a 100 page pdf. That 100 page pdf will exist only once in the library, but you will end up having 11 different scores in Mobilesheets (all referring to one pdf) to use as you please .... 

If you want to review/change the pages used by an existing score, open the edit screen for that score and go to the 'Files' tab. In the bottom left of the screen, the page order field will allow you to view or change the current settings.

hope that helps

Rudy