Project stages allow you to track a given task through different phases of its completion. These stages often will vary from project to project depending on the types of task involved. For example, a project involving software development would likely have different task stages from one that involves planning a real-estate development seminar.
In Odoo 11, a new project does not provide default stages for your project. Fortunately, it is very easy to create new stages. Let's go ahead and create some stages for our new project.
Click the Tasks button at the top of the new project you have created to bring up the tasks:
Naturally, we have not added any tasks to the project yet. We can, however, begin defining stages ...