Nick, here is a potted Hamburger NavBar:

Create and place three black rectangles, grouped together.
With the Text tool, type an X.
Centre the X with the hamburger and group.
Right-click select this group and pick Create Navigation Bar.

Right-click select the NavBar and pick Open.
Replace the X with a space.
Add sub-menus...

I am sure Gary Priester has documented hamburger menus so many times that he is a level-10 Aktins dieteer.

You can curve the corners, change the colour, add a rollover, make it a double cheese with pickle burger.
Absolutely no need to rely on Xara's meagre offerings in the Online Content Catalogue.

You are in control.

Acorn