Go into the main settings cogwheel -> Account -> Settings. Click on "Online" on the left side (2nd from bottom). Change the "Allow Promo Codes?" From No to Yes. If you want to have all promo codes listed in a dropdown, you'll also want to change "List Promo Codes" from No to Yes. Be sure to Save!Related ArticlesCreating a Promo Code - Staylist ProCreating a GL Code - Staylist ProSetting Active Date Ranges for Promo Codes - Staylist ProCreating a Rate Code - Staylist ProCreating an Occupancy-Based Charge - Staylist Pro