Code for creating different images for desktop and mobile

[Jarch1]

I remember I commissioned someone to put in code that makes it so slideshows have a desktop and a mobile option and it seemed pretty simple. I don't have the code anymore so I don't know how to do it. I'm using the publisher theme if that makes it any different. 

[Moeed]

Hey @Jarch1 

Can you create two sections and in one section upload the desktop images and in other section upload the mobile images, then share your store URL and password if enabled.

Best Regards,

Moeed

[Jarch1]

Where do I insert the code?

[Jarch1]

Can you show a picture of where you inserted the code?