How to disable display all posts from all categories?
Visual Composer See documentation regarding Post Grid Element in Visual Composer. https://help.visualcomposer.com/docs/how-tos/how-to-add-category-filters-to-the-post-grid-elements/ Block-based Themes Instead of disabling unwanted categories, the standard approach is to select the category you want to display in a query loop block. See this link from the documentation on how to filter by taxonomy https://wordpress.org/documentation/article/query-loop-block/#filters