I'm going to try describe this best I can.
This is want I want to do but don't know how.
Have the yellow pivots locked in place, but still can rotate.
Have the blue pivot move freely as a secondary animation.(Like a connected limb)
Have the main "mandible" move like you imagine it would.
While also being able to rotate the entire thing.
How would I go about this. I've tried Ik's but I keep getting deformation. If you don;t know by now I'm kinda new to this.