Find Posts --> All Posts
  1.  Login to your WordPress Admin dashboard.
  2. Find Posts --> All Posts
  3. Click on the checkbox on header ( In Just Right Panel) that is --> Title
  4. Choose Edit under the Bulk Action drop-down and then click APPLY . The bulk edit area will appear (See below Image)
    Edit under the Bulk Action drop-dow
  5. Select the categories  for which you want to enable / disable comments, status, format and others. 
  6.   Choose the proper action from drop-down ( Bottom right in above image)
  7. Click the UPDATE button on the far right
  8. That’s all you have to do.