Milestones Professional has a variety of
"SmartColumns" that can help you communicate and track your project's time.
Duration shows the time span from
the first Normal symbol on the task line to the last; or just counts the
time span of Normal task bars and milestones on the task line.
Used Duration shows how much
time has been completed according to the current date line or status
symbol.
Remaining Duration shows the how
much time is yet to be completed according to the current date line or
status symbol.
The Ahead/Behind
column shows the variance between the current date line and the status
symbol.
Baseline Duration shows the time span from
the first
Baseline symbol on the task line to the last; or just counts the time
span of Baseline task bars and milestones on the task line.
Duration can be
shown in minutes, hours, days or weeks. Make duration format changes
under Format | Duration Display Settings.