How to breed for hidden abilities in Gens 6 and 7?

Question

I am still really confused with the breeding in gen 6 and 7. Some people say that there is a 20% chance to pass down HA (male w/ ditto) and some say you can't, some say that you can use a hidden ability Ditto and it would have a 20% chance to produce a Pokemon with its HA. So, how do you do this?

Answer 1

Starting in Black and White, female Pokémon with Hidden Abilities have a 60% chance of passing on the Hidden Ability to their offspring when bred with a male Pokémon from the same Egg Group. In Generation VI, this was extended so that male and genderless Pokémon with a Hidden Ability can also pass it down if they are bred with Ditto. The chance of the offspring having either non-Hidden Ability is 20% each.

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