How to turn on the IK rig for every bone in unreal engine with the control rig?

Hi so I add the animation and add the control rig and bake it. However, the ik rig is only on for the feet. why not for the hands and upperbody? how do i turn that on?

in the KEVIN SAMPEL PROJECT. how do i turn ik rig on for the upper body and hands? ive started unreal engine and CC this month so im very new to this.