Each user has the ability to create a copy of a template if he is granted the ‘Create Templates’ permission on the ‘Smart Issue Templates Permissions’ page. For this you need:
Open the Manage Templates page. (Click the Templates button on your Jira page header, and select the Manage Templates option)
2. Сlick on copy button.
3. In the confirmation dialog enter the name for the new template and/or choose a new owner.
If you leave the fields unchanged, the COPY word is added to the original template name and the current user becomes the owner of the copied template.