Project Permissions
Navigate to the company-managed project you wish to clone issues to
Navigate to Project Settings > Permissions > Actions > Edit Permissions
Give all needed permissions to the appropriate users
“Browse Projects”
Needed to be able to select the project during Deep Clone configuration.
“Deep Clone for Jira - Single/Epic Clone”
Can use Deep Clone for Jira and sees the Deep Clone button in this project.
A user with this permission will be able to access Deep Clone for Jira (Single/Epic Clone) for all issues within the projects using this permission scheme, no matter how global permissions are configured.