pbm hex code generator v2.0 question

can anyone who generates there own monthly codes tell me is this as simple as it looks as i have not used it yet all you need to do is pick the channels you require decide what type of hex code you wish ie kelvar 1.3 then click on generate and the codes that are shown are the currant codes for that month. the next question is when it generates the codes there are four sets of remote codes codes under oc od oe and pbm which set do you use to update a gold card useing the perental contol (Thankyou in advance for any replys)

to genarate your own codes you need the 0d codes from an original card .place it in the 0d codes section in the pbm calc select the channels required and then click on remote .use the 0d remote codes from the next screen

Thanks Jondoe i have extracted this months 0C/0D/0E/op keys and have a exact same set of code numbers as Gazers kevlar OC codes for september after useing pro calc so when you say use the OD codes are the codes that i should use would this also update the card leaveing the OC code as it was as i undestand it only one of the codes change each month so if the OC has not changed next month do i just change the OD set. sorry to waffel on but i only have one card so i can not test my programing yet i have ordered 2 more cards just to use as test cards so i dont have to worry about messing up the one that is working fine now. ps about when do the codes change