From New/Edit Item form user can select one of predefined follow-up flags or set custom due date.
View Item form shows selected flag and/or date with text according to column settings.
List View shows flags and/or dates with text according to column settings.
These settings change displaying mode for list view and view item form.
1. Show status image(flag) checkbox controls showing flag image;
2. Show description as radiobutton list allows selection of displaying mode
for status text and date format;