Allow renaming categories
You should be able to rename categories.
Currently, the only way to do this is to delete an existing one, create a new one, and then re-tag everything.
You can currently change the display colour for a category - so why not allow renaming?
Yes. Why did the remove the ability to manage categories in new outlook?
Cottrell, Drew commented
Renaming categories doesn't work and breaks calendar, don't rename your categories in Outlook!
Once a category is created I can't modify its label any longer, I should be allowed to!