yeah im not quite sure... this is what i do.... lets say i wana ev train jolly chimchar.... i firstly give it 10 protiens and 10 carbos that way it now has 100 speed EVs and 100 attack EVs ans since you can only have 510 EVs alltogether in one pokemon i would say dnt give it any other vitamins if your doing the 252/252/4 spread
bro i need your shiny egg hatching gifts!! if you can hatch me a jolly chimchar (doesnt have to be egg moved but i would like some good speed and attk IVs) i'll literally give you any three pokes you want