The process would be:
Add the mannequin template to Blender scene
Import animation with “Mr Mannequins FBX” on to it
Then bake the animation to the control armature, one way or another
The import script i literally wrote the day before i did the 1.4 update, it was a last minute addition so it’s a bit janky and experimental. I have all the kinks worked out now but i haven’t had the time to do a 1.5 update yet… I keep getting promoted and given more work haha