Please provide more options to change cursor in RealVNC Viewer

Currently, if a machine running RealVNC Server has no mouse input, the cursor in RealVNC Viewer appears as a tiny, hard-to-see dot. Here is a help page on the matter.

I am connecting to an AMX tablet for a conference room, which does not have a mouse, and the RealVNC Server settings do not have the  AlwaysShowCursor option. Please provide a way for me to change the cursor to a more visible dot or something else so I may see it.