Add on opencart website the possibility of payment by card online

Add on opencart website the possibility of payment by card online
Brand plug-in of payment savings Bank Internet Acquiring (RBSPayment) installed and configured on the website. This type of payment it is necessary to bring in the cart of the website for ordering.
It is also necessary to highlight in the incoming notification to the administrator about ordering from the website this type of payment.

A detailed specification of the address and with the screen basket in what form to implement, in attachment to the project.
Preferred lead time – after 22-00 MSK (non-working time organization) so that visitors did not notice the implementation process. Project payment – direct transfer to the savings Bank or Yandex money