As Bob said, you should have a plastic piece that fits between the lift and the processor, with holes that align with the holes in the processor. Screw the adaptor to the processor with small stainless screws. The lift sort of slides onto this "adaptor" piece and is secured with a plastic thumbscrew.
It occurred to me that a picture is worth a thousand words, so here are some pictures of mine, I hope it helps.
Also, Jobo's web site in Germany has instructions for just about everything, but it does take some hunting.
Finally, so I understand, newer CPE's than mine don't have the little white lever behind the drive gear, if your's looks different.