By default, all the packages in the project can be reviewed and modified by any CEDW user.
There are two levels of permissions:
If you want to restrict editing of some package for a specific user or users group, you can easily do this by modifying the package permissions. You can modify package permissions, if you have the Manage model permissions permission for that project. Select:
By default, Read-Write as Global permission is assigned to the project and Read-Only permission is assigned to the package.