Possibility to hide right-hand menu

Possibility to hide right-hand menu

I am using a MacBook  with a display 13''. Whenever I have a big screen (i.e. 24''), I can use ahaslides with ease.
However, when using it without external display, a big chunk of my screen is occupied by the right-hand menu.
For me, it would be ideal to be able to hide it. Otherwise, it could also be good if at least it was reduced in size.
small slides due to big right-hand menu