描述后备计划。这是工作人员或自然支持人员要遵循的分步计划，以确保在由于紧急情况、自然灾害、危机或服务系统故障而导致工作人员覆盖范围意外发生变化时，参与者的安全。例如，工作人员未能上班，自然或非正式支持人员未按计划提供等。 ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________