How can I set up the menu task bar?

If you are using the classic admin: select 'Navigation' in the sidebar of the admin. You will be taken to the new admin (you might need to log in once more). Then follow the next steps: 

• Select 'Navigation' in the side menu and go to 'Primary menu'.
• Here you can set up your menu structure here. You're able to create new items and new sub-items.
• Once set, drag and drop the items to change the order of appearance.