We are aware that including Resources in the Scheduler control for WPF and SL is a really major feature that most of the users would require. We are, however, still in the initial development stage of RadScheduler for Silverlight. There are plenty of major (basic) features to include for the upcoming Q2 release. If we manage to complete all the tasks that we planned for Q2 earlier than expected we will be definitely looking into implementing Resources and Resource Grouping. If we do not succeed for the Q2, we will start working on the task shortly after the official release and we will add the latest internal build to the latest internal builds section of the site as soon as the feature is completed so that you and other users will be able to use it.
the Telerik team