New items are added through the application itself. This can be done by going into 'Settings' and selecting 'Products'.
Within products, selecting 'Create new product' will open a new window to create a new item.
On creating a new product you will need to assign it to a category, button colour, price and if it is a taxable item.
Through setting an item up you can also add a product barcode to allow for an attached Bluetooth scanner to scan items onto an order.