At checkout – associate will normally ask if you would like to use your points or there will be a place online during check-out to add in member number. Please know that if you have forgotten Member Number, simply provide the associate your phone number or email address and they can pull up your account for you. So for each purchase you make, you can earn points and redeem when you like on future purchases.
Remember, every 1,000 Points = $1.
Hope this helps and please let us know if you have further questions!