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From Jira go to Apps → TeamBoard TimePlanner → Settings → Date Fields
Select the project you want to configure in the dropdown list, and then the same configuration with project board settings appears and you can map the fields.
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Turn on the
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“Map dates with Jira fields” button and select the Jira fields you want to map to the Start date and End date.
Depending on your project Screen Scheme the issue types in the project may not have the fields you picked, this list shows a current status. The issue types that don’t have the fields won’t work properly, you should add the fields to the Screen of those issue types
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