Modelling procedure represents the recommended steps in creating a model. It is usually seen as a step-by-step modelling guideline for the user interested in using your modelling tool. Typically, this modelling procedure ensures a complete model and helps users to create content.
Modelling procedure is implicitly realised in ADOxx. The so-called model types are packages of modelling concepts that are grouped in a useful way. It is the modelling procedure that may define the "usefulness" of grouping.
Beside the construction of model types according to the steps of modelling procedures, you may want to implement functions that support going from one step to the next one.