Milestone Categories allow you to group Milestones together thematically, and filter by Category on the Milestones page.
Adding a Milestone to a Category
To add a Milestone to a Category from the Manage Categories page, click on the '+' next the Category name, then select the Milestone from the drop down menu.
You can also add a Category from the Individual Milestone page - click the Add Categories Button below the Progress Bar.
Removing Milestone Categories
To remove a Category from a Milestone, click on the 'x' of the Category you'd like to remove from the Individual Milestone page.
You can also remove a Milestone from a Category via the Manage Category page - click on the 'x' of the name of the Milestone next to the Category name.