This is akeytsu, an amazing rigging and animation tool that would take the technicalities away from you and allow you to focus on the creation of your rigs and animations.
Links:
AKEYTSU - QUICK RIGGING, SKINNING AND ANIMATION - REVIEW & WALKTHROUGH
Mocap Basic Tips in Maya 2018:
FBX Motion to Tpose in Maya 2018
Patreon:
#akeytsu #rigging #animation