You don’t. You’re the master of your universe and your workout, not the gym manager who ordered equipment and organized the gym.
All you really need is something weighted, so pick your pleasure: dumbbells, kettlebells, pre-weighted barbells, medicine balls, or individual plate weights. Select your preferred item and find an empty space on the gym floor. Also, newsflash! You don’t even need to be in the free-weight area. Grab your weights and take them wherever you have room to move.
The most important exercises are those that work multiple muscle groups at once, like squats, lunges, push-ups, deadlifts, shoulder presses, rows, and pull-ups (or assisted pull-ups). By adding weight and adjusting your body position, you can easily get a total-body workout without ever using a machine or hanging out on the gym floor. For instance, try the following series: