Here is an example of my workout routine, it works each muscle group once or twice every four days, and works on a 4 day rotation. This is a very high volume routine and only works for someone with great recovery ability! You can obviously tailor it to fit your needs though, its just a great way to get in that volume and frequency WITHOUT resorting to a push pull legs which I really DO NOT like.
Day1: Chest, Front and Side delts, abs
Day2: Back, Rear delts, Traps, Calves, Forearms
Day3: Legs, Front and side delts, abs
Day4: Triceps, Biceps, Traps, Calves, LIGHT rear delts
I also add secondary pump or feeder workouts in the evening, usually once every four days focusing on the same muscle group in that way for a month at a time. This helps bring up weak points. These secondary workouts don’t make it hard to recover as it may sound like, but they actually increase recovery.
The idea of the secondaries is to use light enough weight that you are not tearing the muscle fiber, just enough to pump the muscle full of blood to increase protein synthesis, recovery, nutrient partitioning, and to increase neural firing. Really can help if you have the time.
IF time is an issue but you would like to try and make it work, you can buy some cheap 5 and 10lb dumbells and that should be good for doing a pump shoulder workout at home. When doing a secondary shoulder workout, il drop my upright row from my normal 65lb to a mere 20lb for 80 or so reps, then ill do 200 lateral rais with 5lb and rest when needed, maybe 100 front raises and 200 rear delt flies.