This plugin defines several actions that can be used to programmatically extend the plugin functionality. All actions begin with the payments_ prefix.
Payments Documentation
Shortcodes
Along with blocks, shortcodes are one of two main ways to add plugin functionality to your site. Shortcodes are slightly more complex, so if you need a more graphical approach, try blocks. A shortcodes may be added directly into any theme via the do_shortcode() function.
Dashboard
All plugin options are configurable by the WordPress dashboard under the single category ‘Payments’.
Mailing Address