That's not possible natively within Trello, but for automation like that, you might want to check out Butler for Trello at https://butlerfortrello.com/
That can perform certain actions based on pre-defined criteria, so you might be able to make that work there!
Hi Community! I’m Elaine, Confluence Product Manager. You may have read my earlier post about page tree in space navigation sidebar. I'm excited to share another improvement that helps you organize ...
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