It is terribly inconvenient to do it manually, but if you really insist. Okay, pegging is available, but only for first 3 people.
CANN ration is 1:4 (1 UROD = 0.25 CANN)
URO ration is 1:250 (1 UROD = 0.004 URO)
dev i think you have Peg rate and exchange rate confused lol