Yes, add the "time tracking" field to the screens for the subtasks.
Be aware that it does not roll up to the parent in a useful way in Software though - you're expected to estimate at story level. You'll be able to view an issue to see it's estimate and the estimates on the sub-tasks, but the reporting will all be on the issue level.
In the past, Portfolio for Jira required a high degree of detail–foresight that was unrealistic for many businesses to have–in order to produce a reliable long-term roadmap. We're tur...
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