1) Go to Catalog -> Categories
2) Find a category and go to Content page.
3) Under "Add Product Category Content" section select a content type and go to create new content.
4) In this screen last two section are dependent on the first block. So if we are preparing new category content these section should of no use.
Page shouldn't display "Associated Content Infos" and "Create Simple Text Content For Alternate Locale" sections when creating new content. These section should come only when using this page for editing content.
Note: The same case when adding product content.