LogFAQs > #946376399

Post #9 already said how, but: https://www.serebii.net/swordshield/breedingmechanics.shtml

There is a new mechanic in Sword & Shield, however. In these games you don't just pass moves onto the baby Pokmon but can in fact pass them on to the other parent. If both Pokmon are of the exact same species (evolutions do not count) and are in the day care centre, and if one of the parents has an egg move, it can be passed. To do this, just put both Pokmon in the Day Care and make sure the Pokmon you desire to learn the move has got an empty move slot for each move you want to pass. After a short amount of time, the Pokmon will pass that egg move across to the other Pokmon
The Pokmon passing these egg moves can even be the same gender or genderless for the moves to pass.