You can order an EV SSL Certificate from here: https://www.ssl.com/certificates/ev/buy/
You will need to pass several validation steps in order to obtain the EV Certificate. The steps are detailed here: https://www.ssl.com/faqs/ssl-ev-validation-requirements/
After the validation is complete, you would install the certificate like you would install a normal SSL Certificate. If you have any questions about that, you can ask our Live Chat for assistance, or email Support@SSL.com.