Select whether you want to set each custom door image yourself or let H5P do the work for you based on the calendar background image set in the behavioural settings.
Select whether you want to set a fixed number of columns and rows for the doors or if H5P should decide dynamically depending on the available space. Note that the latter may interfere with the position of the background image and custom door cover images that should be at a particular position.
When in design mode, all doors can be opened. Otherwise, the doors can only be opened in December on and after the respective day indicated by the door number.