Thank you for providing the additional details. Nevertheless I am not sure how they relate to the initial question. Could you please elaborate further?
Additionally the Grid (and more specifically it's dataSource) does not support different types of data for the different rows. It supports CRUD operations for homogeneous items with the same fields. Are you referring to the Grid columns instead?
Let me know if you experience any specific Kendo UI related
problems during the project implementation, so I could provide further assistance.
Check out the Telerik Platform - the only platform that combines a rich set of UI tools with powerful cloud services to develop web, hybrid and native mobile apps.