For anyone else having this question, I’ve solved it by adding the widget “Image Slider” to the Above Content Area. The slider then appears on every page and post, which I did not want. I added the widget “Widget Logic” which when enabled adds a text field to each widget which you can use to configure where the widget appears on your site. You have to be able to write a wp filter, which I cannot do, but the developer supplied the filter to have the widget appear only on the home page: is_home()