The only way to achieve that would be to manually edit the dynamic data templates we are shipping with the product. The templates can be found under:
install dir - the path to the locally installed version of OpenAccess.
version - the dsl version you are using. This is determined by the visual studio version you are developing against. If you are using vs 2008 you should look into dsl2008, for vs2010 look in dsl2010 and for the latest visual studio look in dsl2012.
language - the programming language you are using (either C# or VB).
the Telerik team
Telerik OpenAccess ORM Meets ASP.NET Web API. Read more.