AR Member has an addon called "Woo Commerce Discounts" where certain discounts are applied to certain memberships. For example, user "John Smith" has plan/membership "ABC". As a member of ABC, he automatically gets 10% off all purchases on the website.
The discounts get applied when John Smith purchases on the front end. However, when admin is setting up a manual order on the backend for John Smith, it does not get applied. Because of that, admin has to lookup "John Smith" in AR Member and manually apply the discount. This occurs a lot if John Smith is using a non online gateway, such as "Pay via Phone" or "Cash on Delivery".
This integration should be done better so that the discount is applied regardless of who is setting up the order.