me in another thread said:
[Directions: download into your \relay folder, then view it via the relay script dropdown in the top pane. Then modify variables!]
Could swear that was verbose enough, but okay...
(written with my script in mind, even though these instructions should work just fine for FN's)
It's a relay UI script, which means that you go into the relay browser to use it. In the top frame (the one with all the location links), there's a dropdown in the bottom-right corner. Select "zlib" ("zlib_manager", if you're using FN's), and it'll load in the main frame. I'd imagine that the interface is intuitive enough in both scripts that you should be able to figure out the rest from there (edit variables, submit via submit button when done).
Edit: is_100_run overrides all familiar switching by zarqon's OCW script. The ocw_f variables determine which familiar you want to use (e.g. hobo monkey for nuns, hound dog for beach, etc). I think there was a mini-project to provide documentation of ZLib variables, but I don't remember if it went anywhere.