Create sub-elements directly in a Doc (and assign easily/quickly)

Description

It would be great if we could add (and assign) sub-elements to an element directly from the document (workdoc).

Currently, we can only create elements, not sub-elements. And we have to click again to assign them to someone.

What are you trying to achieve

In my case, it’s a document created in a project view. This document is used to take notes for project meetings, and the entire table is dedicated to a specific project. At the end of the meetings, in my notes, we list the tasks to be done, and I would like these tasks to be able to be transformed into sub-elements and assigned (this is just going a step further than at present, because today when I create an element I can choose the table, the group, but… not the element, it is just placed at the root at the end of my group).
(Of course, you have to make sure that you attach the sub-item you want to create to the right item). And maybe the pop-up could open directly so that you can assign/give a column detail without having to click again afterwards?