Hello / Bonjour !
I need some clarifications
If you open your document and preview it,
do you have the expecting sequence?
One page or two like you wrote?
If it is ok, the splitter should have similarity with your emulation or you have something within the data that tells you this is a new client!
Look at your data first outside of PPress.
What would you see that is consistent and trigger a new client (could be the header, a slash within a date, a string...)
Once you find it, build your condition for the split around this observation.
Give it a try and if you need a little push to keep going, open an issue.
Provide us with your document, data and configuration from PWatch.