To edit or add subjects, click the Subjects button in the company profile.
Add new - allows to add a new subject. Name field is required to be completed, while the Description field is optional.
You can edit an existing subject at any time with the pencil icon or delete with the red cross icon.
The Subject field appears in the product table at the end of the line. This is a field with a drop-down list, where you should select the subject to which the given line should be assigned.