Duration warning and limit on appointments
Duration warning
It’s possible to set a duration warning on appointments, so that if they exceed a certain number of hours, the user will be prompted with a warning.
To set the duration warning value, go to user settings, and find ‘Duration warning’ and set the value that you want.

Duration warning settings
Save your settings by clicking OK on the same page.
If a user now tries to save or submit an appointment which exceeds this value, a warning will be displayed.

Duration warning – TSR Outlook User Agent

Duration warning on WebAdmin
Duration limit
If you check the box ‘Enforce’, this will limit users from creating appointments exceeding a certain duration.

Duration warning settings
If the user then tries to create an appointment exceeding this duration, they’ll get this message:

Duration warning