Roles and permissions
The following users can bulk edit repeating tasks:
Anyone can bulk edit repeating tasks if they created the task or are a manager of the target object on the task.
Using the bulk options on the Work items > Repeating tasks tab, you can update the organizer for multiple repeating tasks.
From the left menu, select Work items > Repeating tasks.
Select the repeating task you want to edit.
Click the Organizer link at the top of the list.
The Edit organizer window opens.Select the new organizer from the Organizer drop-down list.
Click Review.
Review the changes and click Confirm to update the selected repeating tasks.