No "Selected Simulation" option in PhAT?

In this video, the person can select “Selected Simulation” which allows him to only simulate certain bodies in a ragdoll. However, using version 4.1, I can’t see any option for selection simulation.

Is this a bug? Was this feature removed? Am I and idiot and I’ve just overlooked it?

Any help would be appreciated!

Found it! If anyone is having trouble finding it, you just have to right click the selection of bodies and the top-most option is “selected simulation”. I’m not sure why they would remove the button though.