Once your site is configured to connect with Moodle, you will have a Moodle Links section under Pages in the left Menu. You can then create links to your moodle Courses.
To get the Moodle URL simply open your moodle course in a web browser, and copy the URL from the address bar.
Now you can link any Image, Button, Heading or other builder element to the Moodle Course, and the current Udo's users details will be send along to Moodle, and the user will be automatically logged in.
On Moodle (after installing udo auth plugin)
On Udo (After installing moodle plugin)