We have tutorials coming, but they’re a bit delayed as we’ve been busy wrapping up some other loose ends.
The general idea is to output Skeleton Tracker data from NI mate (with the skeleton tracker enabled) in the position + orientation mode. Make sure the ports match in NI mate and Cinema 4D. This should produce data in your Cinema scene. You can now connect this data on your rig by using PSR constraints, although you’ll probably want to use only the rotation channel for everything except the root joint (root should have position as well). After you’ve set up the rig you should be able to move around with the rig following you in the scene. Now you can use the record function in the plugin to do some mocap.
We have an old tutorial for NI mate available here: https://www.youtube.com/watch?v=2fcd1Vd6nEA
The concepts are identical - the only difference is that the buttons in NI mate are in slightly different places.
EDIT: There’s also this one by Sam Welker: https://www.youtube.com/watch?v=b4WYpO5z2w8