unfortunately I am not able to figure out how I can replace the Header Image by a slideshow. All I know is that I need to insert this <?php do_action(‘slideshow_deploy’, ‘206’); ?> into the editor, right? But where? What to replace?
I am not sure what your are talking exactly about. There is not header slideshow. You can randomize header image only. After refresh of the page your header image will be changed. If you like to randomise the header image then view this below screenshot. Set your header image from dashbaord -> appearance -> customize -> header image Screenshot link
Hope this may help you
Thank you!