Where's my markbook?
You may not be able to see a markbook on your Firefly site. This article explains some of the prerequisites to being able to access the markbook.
The markbook only appears for your related teaching classes. Therefore, the user must have sets associated with them (this can be checked by viewing the user's profile page).
Even if you are a site administrator without a timetable, you will not be able to access a markbook. You can, however use View Site As.
If you are unable to set tasks, you will not be able to access the markbook.