Correct me if I am wrong in saying, but it looks like you have another component on top of the leg_2jnt_freeTangents_01 component. Depending on what you are trying to achieve, you probably do not need that extra component. What @chrislesage was giving an example of was purely just the leg_2jnt_freeTangents_01 component. By default the controller (tangent controller) is turned off, so if you have not changed or moved around were your attributes live, you can look on your global control and there should be an attribute called “Tangent vis”. That should be what you are looking for.
A side note, is that with the other leg or arm components, you can check the setting “Add extra tweak control” and depending on the amount of joints you have chosen to add, you can get a control per joint basically. It will not have that tangent control, rather a more per joint level of control, but thought it would be worth letting you know that the option exists there too!
Hope that you come right!