[I got the Sheets]

Thanks McAroni.
I hadn't explored that function & that gets me closer, probably close enough.

There's a few things that are somewhat unique about my set up:
1) The aspect ratio of my display is closer to letter box that 8.5 x 11, so I have extra blank space at the bottom (in portrait)
2) The way I scanned in the insert it is a partial page (just 1 line)
3) The insert is in the middle of a page (very close to the bottom)

So following your suggestion, I want
- Page 1 (of 2)
- Insert
- Pages 1..2

I normally use 1/2 page turns. With my set-up, this renders strangely: the insert gets tacked on to the first page, then re-displayed, etc.
Single page mode has less duplication, but of course it's an ugly page turn (musically) from 1 to 2.
I ended up doing some cropping and going with vertical scrolling.

Seems like 1/2 page vertical scrolling (with full jump between pieces) would a nice display mode.