Hello Marcus,
if you open the patch browser in Nemesis by clicking on the 'browse' button you can see a ranking from 1-5 stars. By clicking on the stars you can rank the patches.
It is also possible to create your own favourites patch bank manually. Simply create a custom directory called 'Favourites' within the Nemesis_sounds directory. Then move the .fxp files you like most to the 'Favourites' directory. After this restart Nemesis. 'Favourites' is now available as an additional category bank in Nemesis.
Best Regards,
Markus