As I understand it (and very much subject to correction by experts) Multiple Industry New is just a section of track which looks normal but behaves in a special manner. Obviously it can input, output, generate and consume products. Less obviously, it can take on the appearance of adjoining track. Unlike the previous industries, it doesn't have any buildings or industry animations associated with it. You can position any other normal scenery buildings anywhere you wish nearby as you desire.
Sorry, I'm not sure whether or not the rolling stock loading and unloading animations can be made to play with Multiple Industry New.
HTH, John