One thing I could never figure out, and it is probably because I didn't study the docs enough, is when I could delete the archive files. What is the best refer

One thing I could never figure out, and it is probably because I didn't study the docs enough, is when I could delete the archive files. What is the best reference on this. OR, maybe I was trying to reinvent the wheel, I didn't really look at 3rd party libs - only postgresql options (plus my glue on top) - is the only right way to use the archive (file shipping) solution to combine it with a 3rd party?