Currently RadScheduler does not support such customization in its month View out-of-the-box.
You could, however, take advantage of RadScheduler's resource grouping. The following online demo shows an application scenario of resource grouping and its grouping direction: http://demos.telerik.com/aspnet-ajax/scheduler/examples/resourcegrouping/defaultcs.aspx
I hope this will help.
the Telerik team
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