Step 1: To Add a Supplier

Navigate to 'Supplier' >> 'Suppliers'
Click the icon 'New Supplier' on the right panel to add a supplier

Step 2 To Add a Product

Navigate to 'product' >> 'Stock History'
Click the icon 'New product' on the right panel to add a product to stock

Step 1 To Set Group Names

Navigate to 'System config' >> 'Customer group'
Click the icon 'New' to enter group name and description

Step 2

Navigate to 'Custmer/Sales' >> 'Customer', under the column 'Discount customer group', click 'Select' to allocate one customer group to your customer

Step 3

Navigate to 'Product>>Product', under the column 'Price', set the price for each customer group

Step 1

Navigate to 'System Config' >> 'Branch'
Click the icon 'New' to add a branch stock

Step 2

To view the branch stock, navigate to 'Product' >> 'Product', see the branch stock under the column 'Stock'

Step 1 To Generate an Invoice

Navigate to 'Order Info' >> 'Order'
right click the icon 'Transfer into Invoice' on the right panel and generate an invoice

Step 2 To Send the Invoice to Customers

To see the invoice, navigate to 'Order Info' >> 'Invoice'
Right click the icon 'Email' and confirm

* * Other things you can do to the invoice * *
View: right click the icon 'View' to see the invoice
Edit: right click the icon 'Edit' to edit the invoice
Download: right click the icon 'Download' to download the invoice
Payment: right click the icon 'Payment' to add payment history

Navigate to 'system config' >> 'Setting'
Complete the Email