Absence Redwood Show individual dates applying leave in same day submitting twice system taking?

Summary:

On Redwood, an absence add absence page, an employee applying on the same day, applying twice in same date the System taking without any error?
by using the Show individual dates option in Redwood, but we need to restrict the only once they can apply in the same system can't allow applying Twice?

I am attaching image please let help on below issue. But won't need applying same day employee can't submit any his record multiple times.

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