RETAIL PLUS (serv.man7). Back Office User Manual Part 1 (Pages 1-120) - Sharp EPOS User Guide / Operation Manual. Page 16

Once you have selected a product, click on it.  This takes you to the product group screen:

Let’s look at the screen in more detail.
This displays a list of products belonging to the product group.  It also shows the product’s
details, such as the barcode, description, pack size, supplier, etc.

If there are a large number of products in the list, you can click on the scroll bar on the right
of the screen to view other products in the product group.

This is where you can add new products to the product group.