Step-by-step guide

1 - Go to Jira Administration

2 - Go to Manage Apps

3 - Go to Miscellaneous

4 - Go to "User Groups allowed to add Xray Issue Types"

5 - And select the User Groups which are allowed to add Xray Issue Types to a project in the project settings

6 - Save

7 - Check if you have this option available in the Project settings > Actions: 

Link for related documentation

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