You take him outside as soon as it wakes up in the morning and when it uses the bathroom give it lots of praise and say good dog good dog. Do it also the same way after it eats and drinks it's meals. During the day if it's been more than a couple of hours between trips outside, take it out into the grass or the area you have designated and wait for it to go then praise it again Good dog good dog. Take it back into the house right after it uses the restroom so that it will associate the trip outside with using the bathroom. with some consistency and patience they soon catch on that you want them to use the bathroom when you take them outside. If you catch him going in the house, just say. NO! And immediately take him outside to finish. Don't hit, spank or rub his nose in it. That only confuses them and makes them sneak to go.
Not sure they have the information on how to help
Thanks! Your answer is awaiting moderation.