FujiXerox isn't in North America (Where I am and where this Xerox forum is and covers) so I have no way to test it to see if and how it is done.
Typically, if you choose a format that can do multiple pages, and hit the start button on FujiXerox devices, there would be a Next original option on screen during the scan process, and if you select it, it will prompt for the next page.
At least that is how the re-branded devices work (Some FujiXerox models are sold in North America under a different name with slightly different firmwares, I am basing this on a few of them, but they are much larger machines than the CM115)