To use simply put the module in any position on the site. It uses CSS to be fixed to the top so anywhere is fine, I'd suggest somewhere that already contains a module though.
If you're styling this or something be sure to hit the debug mode button. This will start the slider open so you don't have to click open after every refresh.
Responsively the modules will resize based on the amount you choose in the settings. Select 0 to do your own.
Be forewarned that on mobile devices the button may scroll off the bottom due to the fixed nature so PLEASE make sure that you take approrpriate action.