Default Task Owner in Each Board
In the project Kanban view, you can assign a default owner for each board. When a new task is added or created in that board, the task owner will automatically be updated to the configured default owner.
How to Set It
Click the dropdown menu of a board and select "Set Default Owner".

Effect after setting:

Cancel the default owner:

Tips
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Project owners and administrators can set a default task owner for each board.
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When the default task owner leaves the organization, the default owner setting will be automatically removed.