Click on the Products menu
Then click the create products button on the top right
Then fill in the product details
Name-Name of the product
Description-Information about the product
Price (tax inclusive) - The price of the product including tax
Vat group of the Item as indicated
Applicable tax on the item
A= Standard Rate (18%)
B= Special Rate (0%)
C= Zero rated (0%)
D= Special Relief (0%)
E= Exempt (0%)
Then you will press the create button
Changing product information
Click on the Products menu
Click the edit button then enter the correct information and then click update