Giving new role a Edit Content permission

[jeyaa]

Hi all,
I have created a new role called "CopyEditor". Now I have given the permissions like this

<permissionGroup name="CopyEditor"  expose="true" allowFullControl="false" >
          <includePermissionGroup type="cm:cmobject" permissionGroup="Consumer"/>
          <includePermissionGroup type="sys:base" permissionGroup="WriteContent"/>
          <includePermissionGroup type="cm:lockable" permissionGroup="CheckOut"/>
          <includePermissionGroup type="sys:base" permissionGroup="ReadPermissions"/>
      </permissionGroup>‍‍‍‍‍‍

I need to give permissions like editor except edit properties of the content. So i have included WriteContent permission group instead of write. But I was astonished, when i invite theuser for the above created role. I cant check out., ie., Edit content option is not there in the dropdown and also create content and create space is been possible for that space. Please help me what I have to do, to jus get the editor properties except editing the content details.

[jeyaa]

Did anyone know the solution. To be simple, If i create a new role, the other roles permissions are also got affected.
Example :
After created new role,
Editor ,consumer are able to add content/space.

Do I need to register my new role anywhere in alfresco models?

Thanks.