Hiding JUST the right hand margin of slide - working space is so small compared to Keynote -anyone know if thi is possible yet??

Day 1 using Figma

I just want to use Figma Slides right now … and trying to get used to it vs Keynote.

I understand how to hide the whole UI.

But I want to hide JUST the right hand margin of slide - as the working space is so small compared to Keynote - which is an issue working on a 13inch laptop -anyone help please?

Thanks