Stock categories
Here you can set up the categories that your products in your inventory will fall into. These categories will then be linked to the products and you will be able to use this to filter your list of inventory products.
To add categories select Add new stock category > Write in category > Create.
You can set up categories like masks, cleaning, facials etc. However, you can also use the categories option to separate your retail and professional usage of your products. Therefore, you will be able to differentiate between the stock take of a product that has both professional and retail use.
Click on the three dots next to a category to Edit or Archive it (third image).
To restore any archived stock categories you can toggle on 'Archived stock categories' > from here you will then be able to 'Restore' the stock category.