You can create a role hierarchy that mirrors your organization chart and associate privileges and authorities that are common to a "job role" to a role object.
可以创建一个角色层次，以便将组织图和对于一个“任务角色”相同的相关特权和权限映射到一个角色对象。
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The main purpose of the chart was for us to agree on schedule and milestones and to set up a hierarchy of work breakdown structure (WBS) items that we could track, estimate, and execute against.
The software industry has long applied a hierarchy that puts "manager" above "programmer" and "software quality assurance analyst" on the organizational chart.