Yes, I read about the preset.
So, according to kyu/dan level rating explained here, if the r and RD is preset to 1500 and 350, respectively, it means the preset is set to 6k?
Also, if a club member who has never played go, but learned the rules, etc., can we assume that she can be given rank 30k, r = -900, RD = 350? And, since we don't want the player to go lower than 30k, does it make sense to reset the player's r = -900, if it goes below -900 (e.g. -1000)?