Under a resources "Additional Information" , I can't seem to find a way to change this from User specified meta-data to a Pre-defined tree structure of meta-data that they user can than just select from. There is also no documentation that explains how to amend this widget area and choose from different types.

Additionally, let's say that we had a populated tree with all the values that they user needs, but the user sees that there is something missing and want's to append it.Is there a way to also have User Specified meta-data below the tree structure for them to append additional values to?