The IK rollouts contain controls for interactive IK and the HD IK solver.
The rollouts on this panel are:
Inverse Kinematics Rollout (Interactive, Applied, and HD IK)
Object Parameters Rollout (HD Solver)
Auto Termination Rollout (Interactive IK)
The HD IK Solver rollouts appear on the Hierarchy panel.
The Interactive and Applied IK rollouts appear on the Hierarchy panel.