Every so often I have an aggregate with a bunch of Entities and these have a bunch of fields. If I start selecting the fields to Group By, and run into a field to expand (most likely an Id), I loose the previously selected fields.

So my idea has to do with perhaps a quicker way to Group By fields and it goes something like this:

1. In the aggregate's sources, we'd right-click on the entity, and have an option to 'Group By fields'

2. After selecting the option above, we could see a dialog similar to the one we get when we choose to add, to the Local Storage, an Entity from Database - dialog that shows the entity fields and you choose which ones you want to group by:

Cheers!