If you are already in the audit or verified track of a course that is part of a program, you can purchase the verified track for all remaining courses in the program in several ways:
From either of these locations, you are taken to the payment page where you can confirm the items in your cart, any applicable discounts, and your payment information.
After you make this purchase, you are enrolled in the verified track for all remaining courses in the program.
Note: For some courses that offer multiple sessions, you cannot access the course until you select a session to join. For more information, see How do I complete a course with multiple sessions?
From the Program's About page
On edx.org, search for the program that you are interested in.
Most programs offer a one-click bundle purchase to add all the program courses at once using the Pursue the Program button on the program introduction page. You can scroll down until you find it from the program page. You can read more in Options for purchasing a program.
From the Program details page on your dashboard
As soon as you are enrolled in a course that is part of a program, you can also access the associated program details from the Programs tab of your dashboard.
Click the thumbnail of program that interests you from this page.
On the program details page, the courses that you are currently enrolled in are listed under Courses in Progress. To purchase the verified track for all remaining courses, including upgrading your “in progress” courses if you are currently in the audit track, select Upgrade All Remaining Courses.