Reassigning multiple tasks to a new user

Question

Scenario is as follows:

--> A manager in a company was assigned to-do-tasks using SharePoint workflow on a regular basis.

--> Now this manager leaves the company.

--> Now how will we assign all these old tasks which are due for approval to a new user(a new Manger who joined the company in this case).

Any help would be much appreciated.

Note: Context is SharePoint 2013 online.

Answer 1

Go to the list with tasks, click on List>Quick Edit:

The list will open in spreadsheet mode. You can sort the tasks to choose the ones that are due shortly:

You can assign a new person to multiple tasks just by dragging the new person's name across the table (Excel-style):

After you click on 'Stop editing this list' your changes should applied to multiple tasks and saved.