When you create a task in Project Task Gantt, you can edit it in Salesforce. The initial duration of a project task is set to one day with the same Start and End dates. Initial duration is zero days for a checkpoint. If you create a sub-task in Project Task Gantt, the selected task becomes the parent task and inherits the duration of the new sub-task (one day).
The initial Start and End Dates of a new project task are applied as shown in this table.
Tasks Selected
Start Date Applied to New Task
One task
The selected task's Start and End Date.
One task without a Start Date
The earliest task's Start Date is the Start and End Date.
Multiple tasks
The last task's Start Date in the selection is the Start and End Date.
None
The earliest task's Start Date is the Start and End Date.
When you edit the duration of a task in Project Task Gantt, the end date of that task is updated. When you edit the start and end dates of a task, the duration of that task is updated. The edited duration displays in days or displays in hours and minutes, based on what you select in the Duration field. Days display as #d where # is the numeric value for days. Hours and minutes display as #h:#m where # is the numeric value for hours or minutes. For example, 2d is two days. 1h:45m is one hour and forty-five minutes.
You can view project tasks in duration units of hours or days. To change the duration units, see Editing Duration Details. A task's duration is recalculated accordingly when you change the unit from days to hours, or vice versa. If you change a task’s duration unit, and then change it back again, the task’s end time may be different. For instance, if the end time is 10:00PM in hours duration and you change to days and then back to hours, the end date is set to the default. For example, 5:00pm.
Changing the Duration Unit to Hours
The hour duration is calculated as the total time from the start to the end of the task. When you change a task's duration unit from days to hours, its start date and time, and end date and time, are unchanged. Non-working time and days are included in calculations. The work calendar is not applied when a task's duration unit is in days.
Here are some examples of the effect on task duration when you change the unit from days to hours. The day columns show details for the task in day units. The hours columns show the recalculation after you change the duration unit to hours.
Task in Day Duration Unit
Task in Hours Duration Unit After Change
Start Task
End Task
Duration
Start Task
End Task
Duration
Mon 14/11
09:00
Mon 14/11
17:30
1 Day
Mon 14/11
09:00
Mon 14/11
17:30
8:30hrs
Mon 14/11
09:00
Tue 15/11
17:30
2 Days
Mon 14/11
09:00
Tue 15/11
17:30
32:30hrs
Mon 14/11
09:00
Wed 16/11
17:30
3 Days
Mon 14/11
09:00
Wed 16/11
17:30
56:30hrs
Mon 14/11
09:00
Fri 18/11
17:30
5 Days
Mon 14/11
09:00
Fri 18/11
17:30
104:30hrs
Mon 14/11
09:00
Fri 25/11
17:30
10 Days
Mon 14/11
09:00
Fri 25/11
17:30
272:30hrs
Fri 18/11
15:00
Mon 21/11
10:00
2 Days
Fri 18/11
15:00
Mon 21/11
10:00
67:00 hrs
Changing the Duration Unit to Days
In day duration, you can’t edit the task’s start or end time. For a working day, when the task time differs from that of the work calendar, the task time is aligned to the time as specified by the work calendar. See Setting up Work Calendars to set up a work calendar. Non-working day start or end dates are moved to an available working day. Start dates are moved forwards, whilst end dates are moved backward to the end of the last working day. Non-working days are excluded from calculations.
Here are some examples of the effect on task duration when you change the unit from hours to days. The hours columns show details for the task in hours units. The days columns show the recalculation after you change the duration unit to days.
Examples