Works as a traditional two button mouse without a scroll wheel . The right side of the mouse can be customised in accessibility menus; And the primary button (left) can be set with a long press to mimic right click on hidden menus.
Combined with the screen blob (also customisable ) in Accessibility and a further feature little known Hot Corners found at the bottom of the assistive touch menu (customisable as well) you get a surprisingly functional experience.
Just the scrolling doesn’t work - Its click and either drag with a quick release under the inertia or click and hold on the on screen handles and pull in the desired direction
In some apps double clicking and holding will initiate screen zooming
Those that say it does nothing are plain wrong and haven’t looked beyond the basic pairing process.
As a small scale developer I have been playing with various mice for many months now including Microsoft ones with clicking scrolling wheels Logitech and the Lenovo Yoga . The last is actually rather nice imho