The top one uses what we call the top clamp system. Where there is a big nut that holds the foot or attachment. The nut is held to the presser foot bar by a screw. To use them you have to remove the nut assembly, then put the attachment in it's place and clamp it down with the little screw you can see in the angled silver part.
The second on is is a standard low shank version. Use it just like a regular attachment.
I'm pretty sure I have on in my collection, but I don't think I've ever used it.
Joe