Dear partners,
Would it be possible to change the default permission by activity ?Or we need to change the permission separately by course.
If it's what you mean, you can override permissions in any context you like - Override permissions. Well, some users can. It depends on the capabilities you have.
BUT!!! Careful. My bitter experience is that there are two big problems...
1. You will forget you did it and in six months time you won't be able to remember why the activity is working in some weird way you don't expect.
2. You will create situations that have never before been tested and find strange bugs that are hard to diagnose.