On the Dashboard, click on the button "Create New" situated at the top right corner. Or we can click on the "+" button placed at the bottom right corner.
After that we have to click on the "Customer", available in the Sales section.
After that one window would be open there we have to fill all the desired information of customer.
After filling all the information of Customer, we have to click on the button "Create".
It is useful in creating the GST Invoice. Once we will save the Customer details then automatically Customer details will come while creating the invoice. You have no need to fill details every time.