A method of organizing received decision instances based on reference architecture, including determining a respective particular project phase attribute for each of the decision instances, classifying the decision instances, determining a respective scope attribute for each of the decision instances, categorizing the decision instances in accordance with each of the respective scope attributes thereof, for all decision instances with the same categorization and with the same classification, ordering the corresponding decision instances by model elements, modeling directed links between apparently dependent decision instances, analyzing the dependent decision instances to confirm that the decision instances satisfy the apparent dependencies represented by the directed links and producing an error message if a result of the analysis is negative, and generating a real-time updateable and/or modifiable to-do list interface.