Pro Tip If you don't have the attachment shown in the video, you can always improvise with a regular pulley handle, but it is not ideal.
How To Stand upright adjacent to a cable machine, with your attached leg raised and a hand holding onto the pole for support. With your other leg firmly planted on the ground, exhale and bring your attached leg in towards your planted leg. Continue until your attached leg passes your grounded leg, keeping the attached leg straight. Inhale and allow your attached leg to move away from your body, returning to the starting position. After all reps are completed, switch sides and repeat the movement. 10 reps prescribed means you should perform 10 reps on each side (20 total).
How to do Cable Hip Adduction : Step 1: Stand facing a low pulley with one leg next to the unit and the other one away. Step 2: Attach the ankle cuff to the cable, as well as the ankle of the leg that is near the pulley. Step 3: Next, step out and away from the stack using a wide stance. Grasp the pulley system's bar. Step 4: Stand on the foot that does not have an ankle cuff. Allow the leg with the cuff to move toward the low pulley. This is the starting position. Step 5: Move the leg with the ankle cuff in front of your far leg by utilizing your inner thighs to abduct your hip. Exhale during this movement. Step 6: Move back to the starting position as you inhale. Step 7: Repeat the movement for the desired number of reps, and then switch to the opposite leg.