i am so sorry if i my post is not clear.
i did followed the demo Isolation steps but it didn't help.
Based on the demo that you have
you would notice that when i double click to create a new appointment for Margaret Morrison Main Room and when i click on option button, it would show the selected value of Margaret Morrison Main Room in the dropdown list
But for my case, when i create a new appointment for Kent John, i would have to select from the dropdown list and then select a value in this case Kent John from the dropdown list.
Is there a way i could accomplish what you did for http://demos.telerik.com/aspnet-ajax/scheduler/examples/resourcegrouping/defaultcs.aspx
Thanks a lot