将使用者加入至预设群组。
预设群组存在于伺服器层级、集合层级和专案层级。
Default groups exist at the server level, the collection level, and the project level.
您无法在集合层级移除预设群组，只能移除自订群组。
You cannot remove the default groups at the collection-level, only custom groups.
您可以使用现成的预设群组和设定加以自订，或建立自己的群组和设定。
You can use the default groups and Settings as they are, customize them, or create your own.
设定提供者会判断适用于应用程序设定指定群组的预设值。
The Settings provider determines what reasonable defaults are for the specified group of application Settings.
此外，所有预设的集合层级群组也会加入到专案。
In addition, all default collection-level groups are added to the project.
预设“全部”位于最上方，这个群组显示所有的联系人，且不能被删除或编辑。
By default, the group "all" will exist on the top. This group contains all the contacts, and cannot be deleted or edited.
预设“全部”位于最上方，这个群组显示所有的联系人，且不能被删除或编辑。
By default, the group "all" will exist on the top. This group contains all the contacts, and cannot be deleted or edited.
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