1. Get access via browser to the shop administration: e.g. ## http://localhost/opencart/admin;
2. Click Extensions / Payments;
3. Find "CardPay" payment method and click INSTALL button;
4. 4. Click EDIT button;
5. Set all required parameters:
- Test mode? redirect transactions to the test-database?
- Hold only? use 2-phased payment?
- Shop ID merchant's shop ID (merchant gets it after he is successfully regestrated in Cardpay payment system
- Secret key merchant's secret word (merchant generates it after a success registration in Cardpay payment system)
6. Click SAVE button.