Hi,

You should have dateStart and dateEnd in the task object, the label can be skipped and the default label will be ‘Unassigned’
Here is an example with similar task to yours:
https://codepen.io/dkeamcaksoem/pen/jOXaXxe

Best Regards,
Svetoslav Borislavov

Smart UI Team
https://www.htmlelements.com/