If you have the base plate that that the vac clamp mounts to you will see a couple of notches, the nuts go in the bottom of the mft rail, the knobs and round retainers go into the nuts, if you want the clamp to swing down and out of the way under the table the knobs and round retains slide into the slots and lock it under the mft table, can't send a picture but will look for instructions for you, hope this helps.
Richard