We can then make sure that the rig is correct by selecting the 'Configure' button. In this case all of the bones are green, however I am missing certain bones that may be useful such as Eyes (which Mona uses for natural looking around) and a jaw. These could be added in my 3D Application (such as Blender, Maya etc.) between the Mixamo and Unity stage.
It is possible to drag and drop, or use the circle at the end of the parameter, to select different bones into the required slots if you have any issues. As the .fbx was exported using '.Fbx for Unity' this usually doesn't have any issues apart from the missing bones as mentioned.