I created an entity form and added a subgrid connected to SharePoint to show documents. By default only 2 columns are present, "Name" and "Modified", I have been trying to configure the subgrid to add another column "Description". I have seen examples with extra columns but have not been able to find a solution that works. The first image below shows the subgrid layout that the costumer sees. I need to add one more column labeled "description".
I need to include a "Description" Column here:
This is where I added the subgrid, but no way to edit:
This is where I add documents within the model driven app, but there is no way to edit the columns here
Believe this is a limitation with the Portal. You may have seen additional columns etc in a Model Driven App as this is possible to configure - but I am not aware of anyone getting additional ones onto the Portal (have seen people hide the Modified column using JQuery but that's about it).