If you want to fill incomplete data for each customer, in the DealPOS application when filling in customer data for the country section, you need to make a list of the country first.
Here are the steps to add or create a country list. where this will be an option in selecting a country when creating a new contact.
Step 1. Go to Contact, Click More Menu, then Choose Country (Option Value)
Step 2. Click Add
Step 3. Fill Country Information, then Click Save
You might also like to read these articles below :
To add new customers and suppliers individually, you can check this article Add New Customer & Supplier
To add new sales person, you can check this article Add New Sales Person
To add customer and suppliers in bulk, you can check this article Import Customer / Supplier
If you want to create a customer group for multiple customers, you can check this article Create Customer Group
To add member exclusive for outlet, you can also check this article Member Exclusive for Outlet
If your customer turns out to be your supplier too, you only need to make 1 contact, you can check this article Assign Customer Contact as Supplier