If you make a new charater, select race Hobgoblin of the Feywild (UA) Details Page, or rabbitfolk and a few othes.

You get the option to:

Increase 3 scores (+1/+1/+1)
Increase 2 score (+2/+1)

after you select one, you get another drop down to pick which stats you would like to boost. 

How do you do the same thing with a Home brew race?

I can find how to add "Bonus - Choose an Ability Score" twice but that's not exactly the same as someone could add 3 to the same thing.

Thank you

Make a homebrew copy of one of those races to see how it does it.

I've been able to copy classes for homebrew, but not races. If I make a variant, it still starting with a blank template.

You can do Create Race (as in Race, not Subrace or Variant), have it based off Rabbitfolk (UA), and there you are.

That worked! 

Thank you!