With a sharp knife, cut leg quarters at the joints if desired. Place in a 4-qt. slow cooker. In a small bowl, combine the tomato sauce, soy sauce, brown sugar and garlic; pour over chicken., Cover and cook on low for 4-5 hours or until chicken is tender. Freeze option: Cool chicken in sauce. Freeze in freezer containers. To use, partially thaw in refrigerator overnight. Heat through slowly in a covered skillet until a thermometer inserted in chicken reads 165°, stirring occasionally and adding a little broth or water if necessary.