If you move your feet closer together while keeping them in the middle of the platform, you can transfer more of the load to your vastus lateralis or outer quad muscle, which is typically very hard to target, and also increase the engagement of your hip abductors. (fitnessandpower.com)
Turn yourself around in a 45 - degrees leg press machine so that your stomach and elbows are resting on the back pad and put one foot in the middle of the platform. (fitnessandpower.com)
With legs a bit wider than hip width, spaced centrally in the middle of the platform, lower the weights slowly towards your body. (blog.fitplanapp.com)