I have the feeling that it is now possible to extend a workout. If you want to do another 15 minutes riding you can extend the length of the work out as you are in the workout. However I cannot see any instructions on how to do that.
If it is possible can someone please give me a pointer
Always useful to leave threads like this up I think John. They show up in searches so future people with the same questions can find them, even if it just links to other threads.