Help with adding a Crane Song HEDD to a Mix24 setup

[DC11]

I just got a Crane Song HEDD and I'm having trouble figuring out how to hook it up properly. I know I can use it as a word clock and as a AD/DA converter. Can it do both at the same time? To do the former, do I use the 75ohm cable, right? And where does it go? I've got my 3 888's hooked up using that for master and slave. Do I hook up both the WC in and out? Or should I be using AES/EBU connections instead. The manual is pretty vague and I can't find much info in my manual.

I appreciate any information as I'm completely confused.