Once A Week Client

Let me preface this by stating that I’m very new to personal training and I’m just learning how to build programs and workouts. I’ve recently picked up a sedentary client who has little to no experience with weight lifting/exercise. They’ve informed me that they want to come in once a week for “an hour or so”. They are wanting to pick up weight lifting in every physical category but I’m struggling to figure out how to do that on a weekly basis. Do I cram full body workouts in every session or space them out? I know something is better than nothing but I was under the impression that if you’re only working out muscle groups a couple times a month, you weren’t going to make much progress.