[Theme Horse Support Team]

Hi jane.manfield,

Just follow this instruction
https://www.themehorse.com/theme-instruction/interface/#slider

First create a page/ post and add a featured image at the right below of that page. Repeat this process for other image slider also.
Then go to dashboard -> appearance-> theme options-> featured post/page slider and keep the id of that page/ post. Then it will work. If still you can’t set your slider then you may send your temporary username and password at Email Us and don’t forget to send this forum url too.

Thank you!