Post an email to Canvas course

I often receive emails that I want to share with my students. Sometimes it might be an advertisement, could be a job posting and maybe something informative. For a variety of reasons, I don't want to...

The Plus Sign to add content to a module is grayed out

I cannot add quizzes, pages, links or anything else to the the modules--the Plus sign is grayed out. Why is that? How do I fix it?