Please tell me this is possible! The plugin is kind of useless if I am a teacher with 5 courses, and I want to schedule the same office hours across these courses. Metalinking courses is a bad option for us, as it creates confusion with students by adding yet another course to their list of courses. If a student has 6 courses and sees 6 new meta-courses, it is a recipe for trouble.
As a start to making this happen: Can you adapt the plugin where when the teacher sets up a Scheduler activity, that the teacher gets the option - that while creating it in one class - have by default set so that the particular scheduled activity is available for ANYONE with the student role in Moodle? It's not a final option, but it would at least solve the interim problem of having to create metacourses.
A future iteration would then include giving the teacher a dropdown list where they could select particular courses for which he/she wants to share the same scheduled activity.
What do you think?