To edit multiple cards at once, simply hold down “Shift” or “Ctrl/Command”, and click on the cards you want to edit.
When pressing "Shift" and clicking on two or more cards, you will select all cards in this range.
When pressing "Ctrl" or "Command" and clicking on two or more cards, you will only select the cards you've clicked on.
The multi-edit functionality lets you:
➡️ Move multiple cards
👥 Assign multiple cards
🎨 Change colors of multiple cards
⏱️ Set due dates on multiple cards
✔️ Complete multiple cards
❌ Delete or archive multiple cards