Conversations: tags for only instructor use and tags students can use

Currently, any tags the instructor creates can be used by the students. The instructor may want to tag topics with group labels or something so they can easily find those topics. However, if students have tag permissions (default), the students have access to the same tags.

My 2 cents, if the instructor allows the students to tag posts, there should be some tags for the instructor only, and then a set of tags for anyone in the site to use.