Currently, it is not possible to drop a document into a parent object (e.g., a folder) within the dashboard environment. In the attached picture, you can see a customized dashboard for the new Fast Starter Collaborative Workspace. It would be a valuable enhancement to have a drop zone for adding documents directly to an existing folder. At present, the available drop zone only supports documents without a designated primary parent.
Definitely a useful extension - we plan an extended Quick action widget to store documents and link them to existing eFiles in specific/selected folders (currently scheduled for V14.2 in Q2/2025).
In efile dashboards it is already possible to drag & drop documents on specific folders.
The idea would also make sense to me