Lightning Flows
As of Surface version 1.7, Lightning Flow is the primary method of navigation. Flows provide the ability to use Surface component in the Salesforce Mobile app and within Experience Builder (Communities).
You can find more information about Lightning Flow in the Salesforce Flow Trailhead unit.
Surface comes with prebuilt flow templates for Quote/Order, Invoice, Delivery and Customer Information. These templates can be used out of the box or customized and saved as a new custom flow.