Any 'active' bordered box can be populated in the following ways:
Click inside the box and Arrow up or down to scroll through all available entries.
Begin typing in the box and the field will 'auto-search' its entries
If the active 'bordered' box also has a ? icon: clicking this icon opens a list of available entries for selection.
Hitting [F3] inside the box will open a select screen which lists all available entries for selection.
Active fields have a white background; a shaded background indicates that the field is not available in the current mode.