Custom race and skill proficiency

[LiamChgo]

I'm attempting to set up a custom race. I have to race, along with two subraces set up and they seem to be working. But one subrace starts with proficiency in one skill (Intimidate), while the other subrace starts with a proficiency in a differenty skill (Survival). How do I assign starting skills to a subrace?

Edit: I still have not figured out the skill proficiency issue, but I have also come across another problem I can't figure out. The race I'm creating has two subrace options. I have the subraces set up, but when I can't get them to show up when I select the race during character creation. The race shows up, and I get the appropriate starting languages, but no options for subraces shows up.