Version of the App
AssertThat Test Plan is available in version 1.1.1-AC or later of the App, so check for updates through Settings -> Apps -> Manage Apps.
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Enable AssertThat Test Plan
AssertThat Test Plans can be enabled through the AssertThat Configuration pages. From Project Settings → Apps → AssertThat Configuration
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Configure AssertThat Issue Type
AssertThat Test Plan use a custom Jira Issue type which will need to be setup and added to your Issue Scheme. The steps required to setup new Issue Types vary depending type of Jira Project which will be either:
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The screenshot below shows the options available when you initially setup a new project.
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Team Managed (old Next-Gen) Projects
For Team Managed (old Next-Gen) Projects, the AssertThat Issue types will need to be setup manually.
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You can now start using AssertThat Test Plans.
Company-Managed (Old Classic Project)
For Company Managed Projects the AssertThat Issue Type is setup automatically when Test Plans are enabled in AssertThat Configuration page.