At present, we do not support the creation of orders in Square from the Intercom Inbox. The technical reasons for this are as follows:
Square orders require a valid and attached payment source e.g. Credit Card, and it is not possible to create these via the Square API or Intercom
Square requires line items in the order and Intercom does not currently offer a good experience for Intercom users to add items to an order.
Overall, Highways believes a best experience for both you and your team to create orders is the use of traditional checkout flows in Square.