Board Thread:In-Editor Help Assistance/@comment-40018112-20200207182647/@comment-9605025-20200207184858

The method for editing a page's list of categories depends on both the editor you are using and your account preferences.
 * VisualEditor (typically default editor)
 * Immediately to the left of the "cancel" button, you should see 3 lines stacked vertically with a downward-facing triangle to their right. Click that to open the dropdown menu. The second option in the menu should be "categories". Click it. This should open a pop-up window. Here, you should see a list of the categories currently on the page. Click the category you want to remove and another box should pop-up. There should be a trashcan icon in the upper-right corner of that box. Click it to remove the category.
 * classic editor
 * category module enabled (default)
 * There should be an editing panel on the right side of the editor. If not, it has been collapsed and you should open it by clicking the border immediately to the right of the editor's scroll bar. There should be a section titled "Categories". If that section is not expanded, click the section title to expand it. You should now see a list of the categories currently on the page. However, over the one you want to remove and a trashcan icon should appear to the right of it. Click the icon to remove the category.
 * category module disabled
 * The category links should be at the very bottom of the page. Scroll all the way down and delete the relevant category link.