Add Page Categories to a Page
Navigate to the desired page
Click Edit
Select the More + tab if the Page Categories tab is missing

Check the Page Categories box

Select the Page Categories tab

Complete the Page Categories options
Edit Page Categories on a Page
Navigate to the desired page
Click Edit
Select the Page Categories tab

Edit the Page Categories options as necessary
Remove Page Categories from a Page
Navigate to the desired page
Click Edit
Select the Page Categories tab

Set the Topics to N/A

Click Save

Page Categories Options

Custom Page Categories: Create or enter the name of an existing custom page category to select it
Topics
Note:
The topics that appear in the Page Categories tab are created by the user and may not match those in the image above
N/A: This topic does not apply to this category
Topic: Select the topic to appear on the page category