Click on SETTINGS > IMPORT PRESETS OR PRESET LISTS > IMPORT DATA. Navigate to the folder on your hard drive where you have saved h9z files. H9z files can be individual Presets or Preset Lists of up to 99 Presets.
You can also drag and drop an h9z file onto H9 Control and it will import it.
There are a couple of public Dropbox's folders where people have been sharing presets. If you'd like access to those, sign up for a Dropbox account if you don't have one already, and submit the email address associated with your Dropbox account here: https://www.eventideaudio.com/dropbox-preset-sharing