1. Log in to your OrangeScrum account.
2. Hover on the “more” option from the left menu.
3. Click on  Gantt chart .
4. Select the required project from the project drop-down.
5. Click  icon against specific task you want to delete.
6.  It will provide warning message saying “Task will be deleted permanently, are you sure?”. Click  Ok to delete the task.(Image-1)

Image-1