Adding an invoice category
First, go to your system settings.
Scroll down to the 'Invoicing' section and select 'Invoice categories'.
You will see a form on the left-hand side and a list of existing invoice categories on the right-hand side. You can add your new category on the left and it will appear on the right when you click 'Add invoice category'.
Editing an invoice category
Click 'Edit' next to the invoice categories you wish to change.
You will see a page where you can edit the information with a space to name the category. Change this information as required and click 'Save invoice category'.
Reordering your invoice categories
Simply click, drag, and drop the invoice categories to reorder them. If you want to move an invoice category from page 2 to the top of the list, then change the number of categories showing per page to 10 or more (depending on how many categories you have).
Deleting an invoice category
In order to delete an invoice category you no longer need, you can simply use the 'Delete' button on the right. There will be a prompt asking you to type in 'delete' in order to confirm that you wish to get rid of this category.