You need at least one shop before you can add a customer — see Shop.
1
Open Business → Customer
Shows every customer added so far. Use the Shop filter, with Reset / Apply, to narrow the list down.
2
Click + Add Customer and fill in the details
Save to add the customer.
Customer Enquiries
A list of enquiries submitted by customers, for you to browse and review.1
Click Customer Enquiries
Use the Customer Name, Enquiry ID, Shop, and Phone filters, with Reset / Apply, to narrow the list down.