Outlook have been complained not having a easy way to ‘one click’ creating a calendar items from an email.
Actually, there is a walk-around solution for it.
Step 1. Open an existing email. Under “Quick steps”, select “Create New Quick Steps”, then choose “Custom”
Step 2. Under “Edit Quick Step”, choose action as “Create an appointment with text of message”, press “Finish”. That is it.
When the next time you want to quickly create a appointment. just click the created quick step, it works by just “one click”
You still need manually set time and place (no smart recognition for time and place by now :), but it already same you plenty of time (at least clicks)