Can't assign a role to Outlook events
Events that I create on Outlook cannot be assigned a role; the role appears briefly, then switches back to No Role. I see that t3rry.d3nsmor3 had the same problem and that it's marked as Fixed, but I see the same thing on both the web app (Firefox on Ubuntu 18.10 and 14.10) and the desktop app for Windows 10.
Should be fixed some time ago.