Kiosk mode does not loop for me

Running AntiX 3.6.11 and LibreOffice, I cannot get any presentation to loop, either created in LibreOffice or imported from PowerPoint.It does not matter what timing I have assigned under Advance Slide (Tasks) or under Auto. The slide show runs through one set of slides and then returns me to the desktop.

I have resurrected this old Pentium III laptop to be able to do one thing: run a continuous slide show with pictures of our city’s citizens police academy. I need to have it loop so that I do not have to stand near it or babysit it while answering questions.