1. Upload all of the included folders and files to your Zen Cart directory
2. Log in to your Zen Cart admin and navigate to Modules > Payment
3. Locate and click on the NOWPayments module, then click on the Install button
4. On the resulting page, enter your NOWPayments API Key and NOWPayments IPN Secret.
5. Optionally, you can also set the Sort Order of the NOWPayments module, the Default Order Status for orders placed using the NOWPayments module and specify a Payment Zone in order to restrict the availability of the NOWPayments module to certain geographic locations.
6. Click on the Update button.
7. The NOWPayments module is now installed, configured and ready for use.