Add in your chicken, turn the heat down to medium, cover, and simmer for 20 minutes, stirring occasionally, and ensuring that the heat doesn't get so hot that the chicken is boiling or the sauce is burning on the bottom of the pan. You can check for that by scraping the cooking surface with your cooking spoon and seeing if you get any solids accumulating.)
During this first part of the simmer, you'll want to start the knifework for your Garlic Yellow Rice. (Link to that recipe is above.)