Have you found an item on your board you're not able to move? Would you like to prevent the accidental moving or deletion of an item on your board? Try locking or unlocking the card in its place.
Lock or unlock an item
You can prevent others moving or deleting an item on your board by locking it.
To lock an item right-click it and choose Lock Position
To unlock an item right-click it again and choose Unlock Position
Have you found an item on your board you're not able to move?
Try unlocking the card by right-clicking it and choosing Unlock Position