I finally got this together. Below is a PDF detailing the installation of the new Benchcrafted Crisscross 14 and Classic Vise on a Moravian workbench.
You will need to read and be familiar with the instructions (free here) on the Benchcrafted site for the Crisscross and vise screw. I did not repeat everything included there, just highlights for this specific application.
I have had a lot of questions regarding using a wooden Lake Erie vise screw with the Crisscross 14. It will work if you move crisscross mortise and screw farther away from the angled side (leg side) of the vise support than given in the instructions below. This will make room for the larger wooden nut. What would be better, if you were building a new bench is to lower the long stretchers a couple of inches from the original plan. This would make the vise support slightly longer giving you more space for the screw and nut above the crisscross.
Crisscross installation article: BC Crisscross Install
I also made a short video of the crisscross in action: Crisscross Video