Hi John,

I've seen courses loaded wiht all mobile content in one and all desktop in another and the user chooses which to take. You can also allow them to choose from one or the other object within a course - that does get a little trickier when it comes to course completion rules, but you can setup access restrictions that are more complex and the user can complete one thing or another thing to move on to the next activity. There are not settings within Totara to identify a mobile versus a desktop course, though you could use tagging or a custom course setting to add that value and then make it available in the course catalog when a user is making their course selections.

Hope that helps!