Only one die of the three does any work. One die is bored through. This is the "feed" die and aligns the case with a rod on the shell plate. The next die is the swage die and has a spring in it to push the swaged case off the swage button. The last die is the "extract" die. It has some plastic fingers in it that lift the case off the rod and hold it so it can be manually plucked off the press.
The hardest part is getting used to working with the press and doing the work with the shell plate at the top of the stroke instead of at the bottom of the stroke. Die location in the tool head shouldn't really matter since it isn't much of a reach to drop a case into the feed die and take one out of the extract die.
Something you may have seen on YouTube or whatever is putting a hose or tube on the extract die. The other thing I've seen is cutting a hole in a bucket and putting this over the eject die. As cases go through the press they simply fall into the bucket. Either method appears to work although I've not messed with either one.
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