How to display Key Safe info for guests

Hi, I am new to Booking.com.  I have set up my page and started to get new bookings.  However, its a holiday let with access via a key safe by the door.  In policies I have put in the Key Access Code etc, but it is not displaying on guests bookings.  Please help, as my previous agents Airbnb and Trip Advisor made it easy to display access without me having to send information out every time i have a booking.

BrookAve 2 years ago

simply put it into an message template fir check -in and its auto sent