Allow recipients to modify this dataset

Dear all, we are also wondering about this new option. Is there an official answer from Microsoft? In my view  (enterprise environment) this could help the assignment of "Contributor" role only to specific elements in the workspace. In our context we have  specific use cases, where we need to allow to specific users the "update" authorization only to some elements in the workspace (reports, data set, Data Flows etc.) avoiding to add the users at Workspace level.