请参阅下面有关如何使用PowerShell启动工作流的资源：

https://social.technet.microsoft.com/wiki/contents/articles/23850.sharepoint-2013-workflow -management起动-A-工作流使用-powershell.aspx 

I have a Leave Request list for employee with custom SharePoint Designer workflow approval.  The workflow call "Leave Request" and there is a column with the same name that show the workflow status "Not Started" or "Completed", etc...  There is a business requirements that I need to update the value from "Not Started" to "Completed" with rerun the workflow and go through approval process.  Is it possible to update the value via PowerShell for this "Leave Request" workflow status column?

Thanks

Tee

Refer below resource on how to start the workflow using PowerShell:

https://social.technet.microsoft.com/wiki/contents/articles/23850.sharepoint-2013-workflow-management-starting-a-workflow-using-powershell.aspx