For adding new coupon in WooCoupon Plugin you need to follow these steps,

- Go to your WordPress Admin panel > WooCoupon
- Click Add New Coupons to create a new coupon.
- Add your Coupon Code. You can Generate coupon code and Copy coupon code by clicking those buttons.
- Add your coupon description into your Description area.
- The General Tab of Coupon data has few options. Select the Discount type from those options.
- Adding Coupon amount from the options.
- Click Publish button to create this coupon.
Set your Coupon Date
Discount Type: Under the ‘Discount type’, select from any of the three WooCommerce’s core discount types –
- Percentage discount
- Fixed cart discount
- Fixed product discount
Coupon amount: Enter the discount value you want to provide to your users.
Allow free shipping: Enable this option if the coupon grants free shipping.
Coupon expiry date: Set the coupon expiry date.
Coupon expiry time: Set the exact time you want the coupon to get expired. This works in conjunction with the coupon expiry date.
Max discount: Limit the maximum discount that can be redeemed. Say 30% off upto $50. (This option is visible only for the percentage discount coupon)
For new user only?: When checked, this coupon will be valid for the user’s first order on your store.
Valid for: You can define the expiry date of a coupon in days, weeks, months and years. (This option is visible only for auto-generated coupons)
Auto generate new coupons with each item: Enable this option to auto generate coupons.
Show on cart, checkout and my account?: When checked, this coupon will be visible on the cart /checkout page for everyone. (This option will be not be visible for store credit discount type)
Coupon code format: Set up a prefix and/or suffix if you wish. (This option is visible only for auto-generated coupons)
Auto apply?: If you want this coupon to get automatically applied, enable this option.