How select all categories to Slider


How I do to put all posts of all categories in my slider on homepage?

I can select only one category, but I think that should better if I can select all of my categories to show in my slider.

Sorry for my english, it is not very well!


it supports only one category. If you want to display all posts on slider you can create category such as “slider” and attach it to all Posts since WordPress allows to use multiple categories for a single Post.