Not very codified. We've done an OK job tracking them over the years and have good records, but haven't yet made decisions about under what conditions they would be paid out. We can't attribute specific dollar value to them at this point, or legally they would count as debt (which we don't want on the books). We aren't making enough money to be close to paying them out any time soon, so we're leaving that discussion to a later date.
Success would look like the co-op financially thriving to the point we can continue to grow the business, pay back our investors, and pay out Loomio points to everyone who has given their time and effort to get us this far (including a risk multiplier on the earlier work), and then moving to having surplus to distribute to co-op members and, especially, to fund other social impact projects aligned with our mission of a more democratic, fair world.
Another way of asking this is what does success look like :)