With Craft Prototype, it's possible to link artboards that exist on separate pages in the same Sketch file. This is particularly helpful if you need to link from a layer within a master symbol on a symbols page.
To start an interaction, use the keyboard shortcut C.
At the top of the page, click Artboard.
In the first drop-down, select Link to a screen or Link as Overlay.
In the second drop-down, select the destination artboard.
In the third drop-down, select a Gesture.
If appropriate for your design, select the Maintain scroll position after click checkbox.
Click Add Link.
When the destination artboard is on a separate page, you'll see a small blue arrow icon () indicating the group or layer that you are linking from. If the originating and destination artboards are on the same page, you'll instead notice a blue line connecting the two.