To create a permission scheme:
Select > Issues.
From the sidebar, select Permission Schemes. The Permission Schemes page opens. It displays a list of all the permission schemes in your Jira site and the projects that use each scheme.
Select Add Permission Scheme. The Add Permission Scheme form appears.
Give your new scheme a name, and add a short description of the scheme. Descriptions help you identify schemes in the future.
Add users, groups, and roles to the scheme and grant their project permissions.
Associate the scheme with the projects that should use it.