For some reason the event markers for each room or event do not show up so I cannot gamemaster this properly. Which is a shame since everything looks extra nice. For example, there should be a book icon in room A1 but there is not.
They are hidden by default.
Map Note Visibility
Map notes are not displayed by default, and require the Toggle Map Note Visibility button to be clicked in the Map Note tool palette. This setting is per user - each player is able to turn on and off Map Note visibility.