Contributing language courses
How much time do you have to spend per day if you are contributing a course?
It all depends on the course and workload.
Some courses require a couple hours per day, while others only require a few per week. The important thing is that you are committed and consistent. If you can't put much time into a course, it's probably best not to apply.
There's no minium, but what would be the point to apply and not contribute much. ;-)