I am logged on as admin
I am on the Posts dashboard
I have Posts assigned to multiple Categories and I have posts that are assigned to only one category.
I want to display posts that are assigned to only one category.
if a post is assigned to multiple categories, then it that post should not be displayed.
The result should be posts that are assigned to one category and as I edit them and assign them to more than one category, the Post will not show in the List after I click save.
How can this be done?