Adding resources to Resource Groups

[askforjerry]

A little request: could the interface for adding resources to resource groups be improved to better deal with large numbers of resources? Right now, it's drag and drop, one can only add one resource at a time, and it's very cumbersome to drag a resource that's, say, 200 rows down into a resource group that's near the top of the page.

Perhaps there could be a way to make a multiple selection and drag it all at once it into a resource group. Individual checkboxes?

Or maybe it would be easier to just make resources scrollable independently from resource groups?