Diki, yes you can use a tool called "Hot Spot" which enables you to mark a spot and the page number to go back to. This gets saved in a special little prefs file linked to your main chart (the user doesn't see them on the iPad itself)

All you need do is then tap that "spot" and it will jump to the page number specified. Not that I have any charts long enough to use these, but my understanding of the manual is that you can have more than one hotspot in a given chart.

Dennis