We have added new menu and view for Milestones.
You can check milestones related to project and their staus directly from this menu. This tree view have state based colours.
Smart button on Project to check all linked Milestones with this project.
Form view for Milestone with information and smart button to check all tasks related to milestone.
Constraint on Milestone if milestone exist as next milestone in any other milestone it would not allow to start work on that milestone untill prvious milestones are completed.
Start and End date constraint on Milestone.
Other configurations in Odoo
No extra technical knowledge or configurations requireired. Just install the module and enjoy functionality.