Timing Belt Change in Progress

I've got the balance shaft belt off, the balance shaft tensioner and idler.  I've also pulled off the timing belt idler.  I see in this picture of a 16 valve engine (provided by Mr. Van Svensen) that there is a second timing belt idler that I don't have on my engine.  I don't know if it was originally missing or just not required for my engine spec.  I suspect that I'm going to need it!

 

Porsche 944 Turbo (similar layout)