Assign tasks under different task lists from the same project to an new owner

Assign tasks under different task lists from the same project to an new owner

Hi,

I would like to ask if there is a better way to assign all tasks, that are under different task lists ( under same project), to a new owner?

Currently I have to expand each task list (and click on expand more if list is too long) then check twice to select all tasks and their subtasks, set the owner. I have to repeat the above steps for every task lists in the project, and I have 20 lists.