Board Thread:Help and Support/@comment-32712012-20170801234052

I know how to add categories onto a page and change the ones that I have just added, but the moment I hit the Save button, I can't remove or change the ones that I just added. I discovered this because I want to change the Teenagers category on the Sandy the Leopard page to the Mobian Teenagers category, but I can't change the category or even remove it and replace it with another one. Can someone help me figure out how to do this? Thanks! 