It may be as simple as an email approval but you need to get it in writing that the new feature is being added to the project and the subsequent impact that will have on the schedule and budget.

变更流程可能像批复邮件一样简单，但是你有必要记录下来：新特性加入到了项目中、它对进度和预算将产生怎样的影响。

youdao

Drafting a work breakdown structure (WBS) as the basis for a project schedule.

草拟以项目计划为基础的工作故障结构(WBS)。

youdao

Test motivators are documents that may relate to the test effort, such as a project schedule, a requirements document, or a project plan.

测试激发因素是和测试努力相关的文档，例如一个项目进度表、一个需求文档、或者一个项目计划。

youdao

The project, known as NextGen, is four years off schedule with no end in sight.

WSJ: Review & Outlook: Flying the Government Skies

But as on a movie shoot, it soon became apparent the project was going to grow beyond its planned schedule and budget.

WSJ: A Family-Friendly Retreat in Venice