Configuring preferences and options in Outlook.com
Since they can't deliver any new functionality they need to retract features just to present them as "new" in the future along new crappy design with awful UX. With Win 11 they basically took Apple approach "progression by regression".
Windows 11 is a crap, new outlook is laugh worthy, Teams are and always has been a toy in compression to old communicators from Windows XP era.
I had to move to Win 11 recently in work and i spent 10h in total to install fonts, imagine that - who is going to pay that?