Modifying this control will update this page automatically
Tap the Plug-ins button 
in the middle of the view control bar to open the Plug-ins area.
Tap the Output button to view the stereo output channel strip.
Tap the magic wand 
to add Mastering Assistant.
Tap the Mixer button 
on the left side of the view control bar to view the Mixer channel strips.
Tap the magic wand on the stereo output channel strip to add Mastering Assistant.
Download this guide: PDF