When you have finished a task that you received from a task owner, you need to submit it to them.
In most cases, the submit functionality will be written into a response page. In other cases, you will be directed to the Run section in Task details to submit the task.
Enter an optional Message, select the confirm, and Submit to submit the task.
The task phase will be shown as Submitted if the task owner has chosen to validate the task, or Completed if validation is not required. The task is now complete.