Clarify use case

Hi Alex,
What module provides the entityrelation field you're referring to?

The difference will quickly be apparent if you install both modules.

entityreference lets you reference specific entities. It does not build dynamic lists based on conditions. You can configure entityreference to permit multiple references, but you still have to specify the entities manually, and thus your list will be static.

If you don't need your list items to change when new content is added, then multiple instances of entityreference will suffice. If you need the list items to change when new content is added to the site, multiple instances of entityreference won't support that unless you intend to manually change the references each time content is added to your site.

Maybe you want to add a screenshot of the configuration widget to the module page

That's a good idea. I'll leave this issue active so I have a reminder to do that.

I added screenshots to the project page.