1. From Setup, enter Data Category in the Quick Find box, then select Data Category Setup.
2. Click a category group name.
3. Click a category name. If necessary, click Expand All to display all categories in the category group.
4. Press DELETE, or choose Delete Category from the Actions drop-down list.
5. Click OK in the confirmation dialog box.
6. Choose how you want to reclassify articles associated with the deleted category or the deleted category's children. In all cases, the articles retain their categories from other category groups.Assign the deleted category's parent category. Assign a different category. You can select any other category in this category group.Note The category you select cannot be deleted itself before you save your work.Do not assign the articles a new category in this category group.
7. Assign the deleted category's parent category.
8. Assign a different category. You can select any other category in this category group.Note The category you select cannot be deleted itself before you save your work.
9. Do not assign the articles a new category in this category group.