Customize Group header with DataBinding for in Telerik scheduler WPF

In radscheduleview, added multiple resources and grouping based on custom resourceview, Also, added custom datatemplate for GroupHeaderContentTemplateselector. 

In the below yellow hightlighted place , (group header ) need to add Resource related information for the day in weekview. But couldnot  get exact datacontext of the group header while switching between dates,  Only able to get IResource from Groupheaderdescriptions. In IResource having only few properties for cusomization. 

So, could not able to bind any property to Group header template. Please suggest on this?