One of the frustrating things about CoPilot for Outlook is that you have to check it's work, it can't be trusted. I just gave it an email which was talking about a meeting I need to attend next week. The sender had included a Teams link but there was no formal ICS. So I asked CoPilot to read the email and create a diary entry with the meeting link. It created the meeting in my diary, but failed to actually include the Teams link. Then when I prompted CoPilot to fix that, it said it would fix it, but it created a second event instead of fixing the recently created event.
Previously I did something similar where I got an email from a partner clarifying their availability. So I asked CoPilot to create a Teams meeting with those people. It created the event but failed to actually add any Teams invite. Then when I wanted to add the Teams meeting, something about the event refused to allow me to add Teams to it. I had to create a secondary event manually at the same time with Teams.
So, right now I can't trust CoPilot with my diary, it's not saving me time.