Heres an example of the code im working with that hopefully should be more clear.

[Display(
Name = "Page Banner",
Description = "The image appearing in the hero area.",
GroupName = SystemTabNames.Content,
Order = 300)]
[UIHint(UIHint.Image)]
public virtual ContentReference PageBanner{ get; set; }

I'd have a folder called /For All Sites/Landing Pages/Page Banners

I'd like to require the user, when editing the property PageBanner to be required to select an image or upload to the mentioned folder.

I suppose you could solve this using Custom validation. Here is a couple of examples:

http://world.episerver.com/documentation/Items/Developers-Guide/Episerver-CMS/9/Content/Properties/Property-types/Writing-custom-attributes/

http://henrikm.com/custom-episerver-property-validation/

Hello Timothy

I have not tried this with image selection but I think this post on changing the root for content references may contain the answer you are looking for:

https://gregwiechec.com/2015/12/changing-root-for-content-references-property/

Let me know how you get on.

David

That sounds like a much better way to handle it than custom validation :-)

I think thats pretty much exactly what I was looking for David, thank you very much. I figured this would be built in but it seems like a simple enough solution.