overflow text

[SLWMP]

I'm unsure how to create a text overflow to automatically create a new page only when required by text length (I found the "overflow" button but keep getting stuck there)

[Dan Korn]

This is documented in the FusionPro User Guide, in the section "Overflow Text" (on page 226 in the latest version).

Basically, you need to create a page of type Overflow in your job, and put a text frame on it that's marked as the Overflow Destination, then when you click that Overflow button for the Body page frame, you'll be able to select the Overflow page as the destination.  Again, this is all documented, with pictures, in the User Guide.