Articulate Rise - change navigation arrows?

Hello All, I have some older/less technologically adept staff in our organization who get confused by the navigation UI in Articulate Rise. For example, when you start a microlearning module, you navigate from the first page by pressing/clicking the down arrow on the screen. However, some of my staff took that to be a visual indicator arrow, and were looking for/pressing any buttons below the actual area of the Rise learning window. I take this as an accessibility challenge that I can help accommodate to, rather than a user error. 

My ideal solution would be to be able to replace the arrow entirely (ex with a different button or shape), make it more of a visible button via emphasis lines, high-contrast background circle, or even customized text next to the arrow ("press the arrow to continue"). 

My intermediate solution is going to be to create modified backgrounds with embedded instructions, written instructions in the course page itself (less ideal given I'd be essentially replacing the title page to do so), or some kind of "how to navigate e-learnings" pdf as a precursor resource to any course. 

A way to modify and customize the slide-to-slide navigation would be best, though I'd love to hear how others have addressed this issue. Thanks!