Thanks for the clarification!@DizzyJ
On the RCBS presses there is a large snap ring or m-clip holding the ram through pin in place. Pull that clip and push out the through pin, rotate the ram 180 degrees and then reinsert the pin and clip. It takes about as long to type this as to do the change.
The catcher portion straddles the press rear support and is held in place by a lightly snugged screw. That's it.
I actually use a small bar clamp to hold the catcher in place since the RCBS Case Kicker I have installed makes getting to the catcher screw a bit difficult and I store these clamps right on the end of the workbench within a few inches of the press. It's easier for me to grab the clamp than to fish a screwdriver from my roll away.
I do remove the catcher when not depriming. I wear XXL sized gloves, so my large hands brush against it when I'm trying to do other operations quickly and I prefer to have the extra room. It's not imperative however, so it sometimes stays in place if I'm going to use it again in the near future. It really only takes about 10 seconds to remove or reinstall.
The thing I like about this solution is that it catches darn near every primer, well above 99%. Instead of using the 2-foot long discharge tube provided I grabbed a 4-foot section from the hardware store. This way I can set a milk jug under my bench and back from the front so I don't kick it with my feet when moving around the bench. The jug sits there nice and happy and out of the way.
If doing marathon deprime sessions make sure there are not a lot of primers backed up in the tube when moving the jug. I once reached under the bench to grab the jug without looking. The tube was flush against the bottom of the container so the primers had backed up to about 18 inches above the jugs mouth instead of flowing into the jug itself. When grabbing the jug the tube slipped from the mouth and all those primers dumped onto the floor in about a nanosecond . I won't be making that mistake again … and this was operator error, not the devices problem.
I wish I had found this solution years prior when all I had was a single stage press. I now have a progressive, but I still decap rifle brass separately and use the single sage with case kicker to do this step.
I hope this helps.