A coupon cannot be given an expiration date, but there is a time restriction on how many times it can be used.
When a coupon's limit is specified, it indicates that any number of people may use it up to that many times.
(For instance) Thus, if the maximum is 3, any number of customers may use the coupon up to three times on a first-come, first-served basis.
Step 1- Head over to Coupon
Step 2- Select the coupon on which you want to set the limit.
Step 3- Set the limit and click on "Save"