This really does depend on the scope and size of the project. We have seen projects completed in as little as 60 days while some take longer than a year. If this is your first effort, we recommend starting small. Pick a process within your span of control, with a manageable problem and a small team. This will allow learners to focus on applying the methodology and understand the tools and approach. As you gain more experience, projects can be more complex, broader in scope and require larger teams.