All of our presets are installed automatically when you install the plugins themselves. Since our presets are handled by the host and not within the plugin GUI, the reason that you are not seeing the presets is not because they didn't get installed but instead, Studio One is not seeing them.

In order to fix this, right-click and 'refresh' the plugin in the top right corner of the effects section, which should add the presets.

You can also check the Studio One folder in "Program Files" for Windows, or "Applications" for Mac to see if the presets are in there.