Straight up to your questions:
This a known issue, which is already addressed. I will suggest you download the latest internal build of Kendo UI and give it a try.
In general, the Scheduler widget supports the recurrence rule
defined in the RFC5545 specs. You could use BYDAY
rule to limit the possible occurrences, but I am not sure if this rule will satisfies your requirements. I will suggest you examine the available recurrence rule and build a recurrence rule, which cover your business case.
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