While having an EPIC consisting of some stories and they in turn having some sub-tasks, is there a way to achieve the following in Jira without commercial plug-ins?
1. A field in each issue called "Remaining effort". It is sufficient if it can hold a combination of months, weeks and days. Like the "Original estimate" field but with another name.
2. An issue that has one or more children should automatically get its field populated by the sum of the children's remaining effort fields. If it doesn't have children you need to manually update it.
3. I want to achieve without having everyone log hours spent as in the Jira time tracking functionality.
Thanks,
Fredrik