You can assign your own driver or partner driver to deliver your order to your customer.
This is a Business Plan feature. Learn Subscriptions.
How to assign an order to driver
Go to Order > All > click on any order > then you can select "In-House Delivery" as Courier.
After selecting "In-House Delivery", choose "Add delivery contact" and add your driver's phone number and name
(If you simply want to add driver's phone number, choose "Add manually" )
Once updated, Driver's phone number will be shown in the Receipt, and Customers can contact the Driver via WhatsApp to track their order
Note
You can manage store's drivers data in Settings > Staff > Partners