I created a simple document library with two extra created columns, both are using type "choice". One column is Project and the other is called Category. Only the Category field is required.
The users upload their documents and pick (or can fill in) the Project and the Category for each document. That works great.
I wanted to create a view that would list all of the documents BUT would use "Group by" for Category.
When I create the view and get to the "Group by" section, neither Project or Category is shown.
Question: Is the "group by" functionality limited to OOB options?
I do not have access to Designer. I can only do what comes with OOB.