If you have delegated users in your Outlook that must manually approve/reject room bookings, detailed below is how this interaction works in Kadence.
When a user places a room booking on a room that requires approval the following happens:
The booking is placed in Kadence and shows as 'Booked'
An email request is sent by O365 to the approver of the room asking them to approve or reject the request
An email is sent by O365 to inform the booker of the room that the request is pending approval
If the admin accepts the booking then it remains in Kadence and an email is sent to the booker informing them the room has been booked by O365
If the admin rejects the booking then it gets canceled in Kadence and an email is sent to the booker informing them the room has been rejected by O365