Delta Pokemon and Hidden Abilities

I apologize if this has been asked before, but how do you exactly get any Delta Pokemon’s hidden abilities? For normal Pokemon it’s accessible using the friend safari but… yeah. Thanks!

Use dream mist with the dream guru in Gaea town.

Ahh thank you!

If we are talking about Hidden Abilities I would like to ask if You can only get standard Pokemon with them via Friend Safari or by using dream guru? You can`t find them in standard encounter?

Yes, unfortunately. You cannot find hidden ability Pokemon in the wild as far as I know, only via the Friend Safari or the Dream Guru.