Can a task with canceled status not take it for the duration of the project?

Can a task with canceled status not take it for the duration of the project?

example:
I have 3 tasks … how can I do so that one of those tasks (canceled) does not take it into account for the duration of the project

Hello Dan,
The tasks with the project type always depend on the dates of their children. There is no way to exclude some of their subtasks when calculating their dates unless you unschedule these tasks:
https://docs.dhtmlx.com/gantt/desktop__unscheduled_tasks.html
In that case, the child date won’t be displayed in the grid
And by using the addTaskLayer function, you can make the unscheduled tasks look as if they are scheduled:
https://docs.dhtmlx.com/gantt/api__gantt_addtasklayer.html
Here is an example of how it might be implemented:
https://snippet.dhtmlx.com/5/6978928e0

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