How do we enter supplier stock invoices for resale

Hello Appliancecentre- 

Welcome to the Community page, 

So if there is not one in the list in categories then all you would need to do is create a new category for it to then select that one going forward. To create a new category is when you in say expense, click on the category box drop down arrow then select add new at the top of the list, enter in the info and click on save and close.