Promo Codes is an excellent way to attract new clients. On your EngineEars dashboard, you'll find a dedicated section for promo codes. You have the option to participate in site-wide promotions when they are available, or create your own unique promo codes to distribute to your clients. Customize the duration of the promotion, the code itself, the applied discount, and whether it is a one-time use code. Once you're satisfied, simply click on "Submit" to activate the promo.