What can the thumb wheel do? Can it be customized?

What can the thumb wheel do? Can it be customized?

The INFTYLAB M Mouse's thumb wheel defaults to horizontal left/right scrolling, which suits scenarios that need horizontal scrolling such as wide tables, timelines, and code editors.
It can be changed to a zoom function via the desktop software; this customization can only be set with the desktop version installed.
This control and the forward button are the same side control: it acts as the thumb wheel when scrolled and as the forward button when clicked.