Hi, is it possible to have multiple teachers inside a course and all of them would be able to edit all the content inside the course? At least I was unable to do it at the moment... I think this would mean that all the teachers should be "authors" of the content? I was wondering if it's possible to get the authors from the Course (OG group) and all the content would get the same authors as the course?
Yes, it is possible.
By default, content creation is done by the admin. Just change the permissions and add more than 1 teacher to the course.
Dont forget that teachers need to have the global role "student manager". Maybe that is what you are missing.