Since you're up front about it being an assignment, here are a couple of
suggestions:
If a "Personalized' (i.e., Custom) Toolbar has been created it can be turned
On/Off just like any other toolbar in several different ways, such as
View>Toolbars.
If the toolbar needs to be created, choose Customize... from that same menu,
which takes you to where you can do the 'personalization' by modifying a
built-in toolbar (*not* recommended, BTW) or by creating Custom Toolbars of
your own.
In the future, you might consider using the appropriate program's Help to
answer such questions. You'll find most everything you need there.