Try this:
Right-click your toolbar, click Customize.
Go to Commands, and down to Built-in Menus
Drag "Format " from the pane on the right on to your
toolbar (if you want
it to go back where it starts off, Publisher ships with
the Format menu
between Insert and Tools)


Mine doesn't seem to have Built-in Menus, but it does
have format on the left pane marked "categories", so I
guess the question turns to how do I get built-in menus
on the left pane. I think your on the right track.