We need to change the description and URL for the items within a group. Unfortunately there are nearly 700 items so it is impossible to do this manually for each item. It would be better if we could bulk edit the entire group. Also it would be great if we could add html to the popup data description when you click an item so we can add a custom button and images.
Do you have anyone on the team with some entry-level programming experience? You can do this very easily by editing the GeoJSON file. Click Download / GeoJSON and have a look.
You can add almost HTML to the descriptions: Markdown. Have a look at Markdown tutorials or read here in the forum, how to use it to add images, etc.