First of all, click New Item+
Here you can add your products and services Name, Unit of Quantity, Sales Price, TAX, Notes and assign up to three categories.
If you turn on inventory management, you can add Par level, Opening Inventory, and Purchase price
You can select a Unit of Quantity, and if you do not find the best for you, you can make any custom quantity by licking the "+" button
Just add a name, then click Save
You can select our default taxes, but if you don't find yours, don't worry because you can add your own TAX by clicking the "+" button
Just add a name and a rate, then click Save
If you want to manage your inventory for this product/service, turn on Inventory management
Select your existing categories and add them to your new product/service
If you want to make a new one, just click the "+" button
Just write a category name, select a color then click Save
If you are done, just click Save, and your new product/service is ready to be on your next Invoice