Multiple mob hunt at 1 quest

There is some quest requaried multiple mob hunts for only one quest so how we gonna do that
For example there is 10 mangyang hunt and 10 ong hunt quest requariment . We want to go ong slot when manyang hunts are over. Dont forget this quest is counts as one. So we cant change training area when first area done

i have the same if some one help <3