Categorize ToDo tasks in outlook?

I would like to categorize my tasks directly from outlook, can this be done?

In the old outlook, I often pulled emails into tasks, categorized them, added a deadline, maybe wrote a comment or so, and saved them. Now I have to use the new outlook and ToDo. Is there a smart way of handling emails that I want to look at later? I want to categorize them or define a time when I need to look at them again. My idea was to pull them to the My Day => Todo, but there I can't add categories. Any ideas how I should use Outlook and Todo going forward?

Thanks!!