Milestones are collections of Epics, which in turn are collections of Stories. You can access the Milestones Page by selecting "Milestones" in the Shortcut sidebar menu. Once there, you can start a new Milestone by clicking on the "Create Milestone" button in the upper left.
Visiting an individual Milestone’s page provides quick stats about the state of the Milestone and how it is progressing. It offers a table of all Epics in the Milestone as well as the Milestone's start and end dates, Labels, number of Stories and Points. From the Milestone page you can also edit the Milestone title and description and delete the Milestone itself.


Adding Milestones Categories
To create a new Category, first click on the click on the Add Categories button and click the Manage Categories option in the dropdown.Editing or Deleting Milestone Categories
Milestones can be deleted by visiting the individual Milestone page, clicking the ellipsis icon in the top right-hand corner, and selecting Delete Milestone. Any Epics within that Milestone will be replaced to the Epics Backlog.