Adding metadata automatically is easy when document properties are promoted from the Office file to columns in SharePoint and/or default values are set for metadata at library and folder level. But once the document is there, it's always been a challenge to let users update the metadata for sake of document management and control.
Modern document libraries offer the possibility to edit the columns directly in the information panel and modern display form. Drag and drop could be the most userfriendly way to let you update the metadata so let's find out how (and if) this works.
I've created a number of "Group By" views in a document library:
Group by Choice field: it works!
The update of the Choice field value is successful:
Drag & drop of tiles does also work
Group by Managed metadata field:
I've submitted a service request in my tenant to find out more about the current shortcomings.
I'll keep you posted about the updates.
Update 28-11-2016: The error with (Group by) Lookup field is fixed by the product team; this works correct now. A new ticket for a hotfix is opened for the (Group by) Managed metadata field.
Update 20-01-2017: Drag & Drop to change the value of a managed metadata field is working now.