task calendars, resource calendars, and project calendar relationships

In fact, the calendar does not matter "resources, tasks, projects",
Just by paying the calendar to the resources, we used to call it the "resource calendar";
Just after the calendar is paid to the task, we are accustomed to calling it "task calendar";
Just by paying the calendar to the project, we used to call it the "project calendar";

The first thing to do with these calendars is to understand the relationship between these calendars.

[List]
[*] The task calendar takes precedence over the project calendar
[*] The resource calendar also takes precedence over the project calendar
The relationship between resource calendars and task calendars is the intersection
[/list]

Although a resource can work over the weekend (resource calendar definition), the task cannot be executed on weekends (task calendar definition), then the task will not be executed on weekends;
Although defining a task can be performed on weekends (task calendar definition), but resources are not allowed to work over the weekend (resource calendar definition), the task will not be executed on weekends;

For example:
If you want a task to be performed on weekends (the default project calendar and resource calendars are not available for the weekend), there are three ways to fix it:
1, define the resource calendar can work on weekends (note that this requires that the task does not have its own calendar, but only inherit the project's calendar);
2, define task calendar and resource calendar can work on weekends;
3. Define the task calendar to be performed on weekends, and tick "Ignore resource calendars when scheduling" later.