Add them to the cock pot add water.Set your slow cooker as directed.
I set my on high for 8 hours.
I start at 8:00 am let it slow cook for 3 to 4 hours before I add the dice onins, chopped garlic, Saute in a saucepan for 4 minutes don't burn the garlic.
Add to the beans.
Add garlic powder, onion powder, thyme, oregano., gumbo file, Liquid smoke, brown sugar, black pepper, stir together.
Slow cook until done the beans and ham hock are tender.
If you need to add water slowly less water at a time.