Automatic traceability links allows you to enable automatic traceability links between issues, test cases, test runs and test plans.
1. Head to Project Administration by clicking on the gear-shaped icon, located on the upper right corner.
2. Select Projects. Then select the desired project.
3. On the left side list of options, click in the link "Test Management for Jira".
4. Go the Automatic traceability links section and enable the options to meet you specific needs.