I'm trying to set up JIRA Agile for my team. I created a test Story, and gave it an estimate of 1 story point. I then created a sub-task. I put both In Progress, then clicked Log Work and entered 1h time spent. The default remaining is to use the original estimate, but when I created the sub-task, there was no field for that. After I entered my time and close the screen, the story shows 1h time spent, 0m remaining and Estimated says "Not Specified". How do I enter an original time estimate on a sub-task?