Use this procedure to delete unneeded categories from a project. 
If you delete a category that contains drawings, the drawings are deleted with the category. 
Note: Deleting a category from File Explorer may result in inconsistent project data. 
- On the Quick Access toolbar, click Project Navigator 
	 
. 
   
- Navigate to the tab for the category type you want to delete. 
  
 
- If you want to delete a sheet category, click the Sheets tab, and click 
	 
 (Explorer View). 
   
- Select the category you want to delete, right-click, and click Delete. 
  
 
- Click Yes in the subsequent dialog box.