Hi, and welcome to Just Answer
I am Martyn, here in Australia. The "Expert" community at Just Answer are not on JA Staff, we are Technicians and Professionals from across the globe, many with our own businesses to run, as well as spending time to help with Q&A on JA in our "spare" time. We appreciate and rely on your honest positive ratings.
Admin will address any broader concerns and questions about billing and site use, we are just here to assist with the Tech side and the specific Q&A
Please see attached images for the 'anatomy' of the parts
The Hook is best made to grab the Bar by setting the Foot beneath the Hook and lowering the arm to engage... same idea to change feet too
It may help to press the rear pin to loosen as it lowers, but generally not essential
Please get back to me if you have any other questions or concerns and I will try help you more.
If you feel that I have helped to answer your questions please remember to rate my performance positively before you leave so that we can close the file as it is the only acknowledgement we receive for our time and experience.