How does one add a ‘tag’ to a lesson or a course?

How does one edit lesson or course ‘tags’ ?

@pmilone - There are some issues with tags which have been noted in some other threads. For some strange reason the tags box isn’t showing properly but we have this on our list.

I can see the lesson tags field now, but I still haven’t tested it. I will probably do in January, when I come home from the Christmas holidays.