Hi,
As before in other versions of Outlook, you can add different qualifiers in the search.
For instance if you wanted to search for categories "Urban Earth" and "Admin" your search will look like:
Category:"Urban Earth" AND Category:"Admin"
I always used a space before and after the AND, but I don't think this is necessary??
Easier would be: Microsoft implementing again a query builder into the web app and "new" version of Outlook.
Removing this functionality of having an easily accessible query builder is limiting my work. I ditched the folder hierarchy in my outlook some years ago as I have saved Search folders each containing multiple categories. With the new version of Outlook I have to manually make this search each time.
For now I stick with the "old" version of the desktop app until the functionality is there that I need, or most likely when the old version is no longer supported by my company.
1 step forwards, 2 steps back.