How we show a task as ascheduled in status.

Hi Umer, 

You can find the description about how to manage work package status here: https://www.openproject.org/docs/system-admin-guide/manage-work-packages/work-package-status/

To allow the transition between status for a role and a type you need to enable it in the work package workflows: https://www.openproject.org/docs/system-admin-guide/manage-work-packages/work-package-workflows/

Best regards
Samantha