lol - nicely asked
my understanding is that a child will be predisposed to learn skills that either of their parents knew
i don't know if there is a certain level of proficiency for a skill to qualify to be potentially passed down
the child then chooses which one(s) they want to pursue
i don't know of cap restrictions as to how many they can choose or if it applies to all of their parents' skills
it could be along the lines of if one parent was a master level tailor and the child chooses to follow tailoring, that they start out as an apprentice and their learning (skill gain) is at an accelerated pace (compared to somebody starting as an apprentice with no parental bonus)until they reach master level, and then progresses at a normal pace