To access the module configuration, select Stores → Configuration → SALES → Payment Methods from the Admin panel.
1. Once you have installed the MasterCard Payment Gateway Services extension, you can configure it.
2. To configure the extension, you must log into your Magento Admin Panel. In the Magento Admin Panel, select Stores > Configuration.
3. In the ‘Configuration’ menu, expand the ’Sales’ menu and click on the ’Payment Methods’ option.
4. You will then see the MasterCard module, where you will be able to select an integration method and configure it according to your needs.
The extension adds the Mastercard Payment Gateway Services section.