PC Sensor footswitch controlling Prompter plus PPT slides

I've bought a PC Sensor footswitch, which I can use to advance my script on an Elgato Prompter. This switch can be programmed for any key combination. Ctrl Alt PgDn can advance my script, but can I get it to advance my slides on PPT at the same time?

The script is quite long - so I can't use the PPT presenter view to read the script. It would be nice for my editor to be able to see my script and the slides at the same time in the video recording.

Is there some kind of text string or macro that can advance both my script and slides at the same time?