Create Sub Admin and provide CMS access only in Magento

1. Go System -> Permissions -> Roles
2. Give Role Name in the 'Role Name' Text field.
3. Select 'Custom' from the Resource Access drop-down and select 'CMS' from the list of resources
4. In First three steps, we created Roles and selected resources to those role.
5. The next steps explain about create user from admin and assign Role to those user.
6. Go System -> Permissions -> Users
7. Give Information of Username,email... in the Account Information form
8. Then select newly created role from the list of roles.