You can easily create and schedule discount codes in your store management area. All discount codes apply to the whole cart excluding the shipping costs.
In your store management area, go to Discounts and click Add discount
Create the discount code
(Optional) Specify the discount name; this one is for your personal use – clients won't see the discount name
Specify the discount amount in percent
Specify whether the discount applies to all products or specific product categories
(Optional) Set up discount conditions:
Limit the total amount of uses, i.e., how many times the discount code can be used in your e-store in general
Set the minimum order value
(Optional) Specify the period of time during which the coupon is active
You'll see all your discount codes (scheduled, active, and expired) in the Discounts section of your store manager:
You can also set sale prices for each of your products individually 🛍️