Here is an Ottoneu slow auction:
https://www.couchmanagers.com/auctions/?auction_id=344
The Couchmanagers tips thread you replied to has some information on how to use CM for an Ottoneu league. Basically some set of players are nominated (3 per team? not sure) and bidding on them is open for some amount of time measured in hours rather than seconds. It doesn’t involve black box valuation or anything like that, just a slow auction that allows people around the world to draft without requiring everyone to be online at the same time.