Once a member is added and categorized into a membership group in the POS, their discount will be automatically applied at checkout. They will add products to their cart, set their designated pickup time or delivery location & preferred delivery time.
The final checkout window will show the items selected and the discount percentage which has been applied. The final amount will reflect the automatic group discount.
To learn more about how to configure and manage members into special member groups and apply or edit specific discounts, refer to these articles:
For point of sale help, see these articles.
Blaze Point of Sale: https://support.blaze.me/hc/en-us/articles/360010116794-Retail-Set-up-Company-Information
Treez Point of Sale: https://treez101.elevio.help/en/articles/422-how-do-i-apply-a-lifetime-discount-to-a-customer