Add a Milestone
Similar to the Phases tab, Milestones allow you to create a default list of milestones that can be added to projects.
To add standard milestone, Click +Milestone in the top left of the Settings > Standards > Milestones page.
Enter the name for your standard milestone. Click Create
Modify Milestones
Click the Milestone to modify
You can edit the Milestone name here or delete the Milestone