![Control rig: Control rig:](https://answers.unrealengine.com/storage/temp/351035-constraint.png)
Control rig: "Full Body IK" constraints don't work(docs are in ue5 and not applicable to ue4?) - UE4 AnswerHub
![How can I add a bone constraint to an armature bone if it only lets me select the individual bones outside of Object mode? - Blender Stack Exchange How can I add a bone constraint to an armature bone if it only lets me select the individual bones outside of Object mode? - Blender Stack Exchange](https://i.stack.imgur.com/mk4TX.png)
How can I add a bone constraint to an armature bone if it only lets me select the individual bones outside of Object mode? - Blender Stack Exchange
![error: IK constraint can only be added to bones??? - Animation and Rigging - Blender Artists Community error: IK constraint can only be added to bones??? - Animation and Rigging - Blender Artists Community](https://blenderartists.org/uploads/default/original/3X/a/c/acf1d0dd50200a80dc34e44e121456ae95dbe004.png)
error: IK constraint can only be added to bones??? - Animation and Rigging - Blender Artists Community
![It's that time again when somebody asks about IK feet and floor constraints - Animation and Rigging - Blender Artists Community It's that time again when somebody asks about IK feet and floor constraints - Animation and Rigging - Blender Artists Community](https://blenderartists.org/uploads/default/original/4X/f/9/2/f9282795407ba3b0ae9731c4c59f3fa136d06777.png)
It's that time again when somebody asks about IK feet and floor constraints - Animation and Rigging - Blender Artists Community
![Introducing the Animation Rigging preview package for Unity 2019.1_Unity Technologies Blog - MdEditor Introducing the Animation Rigging preview package for Unity 2019.1_Unity Technologies Blog - MdEditor](https://mdimg.wxwenku.com/getimg/6b990ce30fa9193e296dd37902816f4b8af78df4f2e09a5ce02f59d00d08423a98f3971f8236b8b665a95a97b9fe9acd.jpg)