By default, Maple palettes are displayed in the left side bar of the Maple window.  You can also display palettes in the right side bar.

You can arrange palettes by using the View>Palettes menu or by right-clicking the palette side bar and using the context-sensitive menus.

To display, collapse, or remove palettes:

Right-click on a palette side bar.

Click Show Palette. A list of potential palettes is displayed, with currently displayed palettes dimmed.

Select a palette.

Alternately, select Collapse All Palettes or Remove Palette if necessary.