@jesusismybestfriend314 I would recommend getting more than one grass pad so you can keep cycling them in and out for cleaning, because the cleaning cycle goes from washing, deodorizing and drying.
For washing, you'd probably want to rinse it out liberally with a garden hose near a drain or some type of drainage. For deodorizing you would either use an enzyme cleaner, or some people say 1/2-1/2 vinegar and water mix works. And then you'll have to let it air dry. This all takes time, so you would probably want to have maybe 2~3 grass pads.
If you can, though, I would still let your pup pee outside whenever possible. You can use a stop watch to time the intervals between when your pup pees (or have accidents), so you have a rough idea of how long they can hold in their pee for.
Puppies generally are physiologically incapable of holding their pee in because their bladder muscles aren't that developed yet, so it's good to have an idea of when your puppy really has to go, because accidents don't necessarily mean your puppy isn't house trained yet, it could also mean the caretaker didn't pay enough attention to the puppy's needs.