Adding a section on your BuddyPanel and using the Custom Link to add the pages of your products. You can do this by going to your WordPress Dashboard - Appearance - Menus. Please select the Menu to Buddy Panel and hit on Select. On the side menu, look for BuddyPanel and click on Add Section. Check the Added Section and change it to a name that you want. Now, go to the side menu and click on Custom Link. Add the link of the course that you want to section. Once done, Add a Menu. You can repeat the custom link to all the courses you want in that section. If you want to add another section, just repeat the steps I have provided. See the screenshot for your reference. 

BuddyPanel Section: 

Custom Links: