You can do many operations on task by selecting them from operations menu in bottom left corner of task window.
Subscribe to task
To be notified on any important change on task simply subscribe to task changes on operation menu.
Move task
You can move task from one column to another inside same board by drag and drop tasks between columns.
If you want to move task to another board you can do it from operation menu.
In window that appears you need to choose destination board and column.
After that just click “Move” button to move task to another column.
Copy task
If you want to copy task to another board you can do it from operation menu.
In window that appears you need to choose destination board and column.
After that just click “Copy” button to copy task to another column.
Delete task
To delete task just click “Delete” button from operation menu and confirm you want to delete task.