From this navigation tab, you can choose the options that are made visible in your LMS account. There is a section that is specific to the administrator view, and a section that is specific to the learner view. At the bottom of the image, you’ll see that there is also a place where you can add additional tabs that can point to external websites etc.
Add remove tabs from the Administrator’s view:
Add and remove tabs from the Learner’s view:
Add additional tabs for all users: