To move the most recently created joint in the joint chain you are drawing
 -click
            the joint.
-click
            the joint.
            The joint’s transform manipulators appear.
 -click
                  the joint and drag it to its new position.
-click
                  the joint and drag it to its new position.
                (Linux
            and Windows) or
 (Linux
            and Windows) or  (Mac
            OS X) key.
 (Mac
            OS X) key.
            The joint’s transform manipulators appear.
 (Linux
                  and Windows) or
 (Linux
                  and Windows) or  (Mac
                  OS X) key again and click in the scene view to continue creating
                  joints for your joint chain.
 (Mac
                  OS X) key again and click in the scene view to continue creating
                  joints for your joint chain.