How To Install Serum 2 Presets Link
Go up one level (or simply remember the location). You don't need to put presets inside Serum’s folder for this method.
In Serum’s browser (left side), click the "File" menu at the very top of the browser panel. how to install serum 2 presets
Select "Add Folder to Favorites..." and navigate to the folder where you unzipped your new presets. Go up one level (or simply remember the location)