Do I have to complete a course before I can choose a new one? 09 May 2019 12:07 Updated No. The ALL in FLAT option give you access to all courses. You can change your course whenever you like. Related articles What does All in Flat mean? Can I repeat a course or lesson? How can I see which exercises I have already done? Can I also take courses while offline? Can I extend my course (access period, subscription)?