From this dialog:
Rename the Milestone
A list of milestone icons are included by default in the initial installation of TRACCESS CI. This list includes Arrange By, Completed, Confirmed, Deadline, Scheduled, Target, as well as Miscellaneous 1 through 14. The milestone icon names are associated with the milestone, and therefore, you may not need to change the name of the milestone.
If you wish to change one of the Miscellaneous 1 through 14 to more appropriate names, see Export/ Import Translations functionality.
Indicate a date (or date range) for your milestone
By default, today's date will
appear in both the Start and End Date fields. To
indicate specific dates, click 
to access a Calendar dialog.
Select the type of activity
Select a color to represent the milestone range (if applicable)
After clicking OK, the Activity Milestone (including all of its modifications) will be displayed under the Activity in the Occupational Development Schedule.