Start/Finish/Duration
Start/Finish
graphic
Open the Properties Dialog for any task.
Click the Start or Finish comboboxes and a calendar appears.
Change the dates on the calendar and click OK and you'll see the task bar "snap" to the appropriate dates.
Duration
graphic
Open the Properties Dialog for any task.
Select all the text in the Duration editbox.
Now type in a duration for this task in hours, days or weeks using this format:
3 h = 3 hours
3 d = 3 days
3 w = 3 weeks
You can also enter fractions such as 1.5d
Float Time
graphic Dependency with “Float” or “Lag time” indicated
Setting a duration that is longer than a Finish time will cause any dependency lines drawn between this task and a dependent task to show as a "float line" indicating some slack time has been budgetted in.
Notes on Duration:
At present there is no "calendaring" feature in JCVGantt.

This means if you enter a duration such as 1.5d, it will base 1.5d on a 24 clock, and estimat 36 hours

The calculations made will not take into consideration "duration of shift", holidays or weekends.

Decimal or fractional durations DO NOT display correctly in MindManager's Task Info bar because they only display integer values. This does not affect how information is stored or displayed in JCVGantt.