Both of these buttons are disabled by default. (Don't you hate when an extension thinks it's important enough to own your browser? I do.) So, pick which one you'd like to use and turn it on yourself. The statusbar button is controlled by the extension options. The toolbar button is controlled like any other toolbar button. Right click on your toolbar, choose Customize, and then just drag-and-drop the Uppity button to where you like it.
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Do not forget to put the button onto your toolbar! This extension simply makes it available, so you need to right click on a toolbar, then choose customize. Find the new Uppity button and drag it where you'd like it to go.