How to implement blocks on a page with the ability to sort?

Question

MODX

Good morning everyone!
Do not tell me how to organize the following structure:
There is a main resource, there are sub-resources in the resource and there is one template. How can I organize so that all sub-resources are displayed on the same template, but the resources have their own sub-templates and when dragging in the resource tree, the sorting changes. In the subrescues there are additional. fields.
It can be output like this:

But how to implement your own templates for subresources. In drupal, you can do this through blocks.