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"Entitled days" (6) value gets populated after following the below mentioned actions and clicking the "Add" (9) button. If user decides to use any day of a given quota, then number of it is to be displayed here (8).
There is another disabled and not visible for for non-recurring vacation types, named "End of first period" (10). it contains an information when period of recurring vacation type (1) will end. This value is calculated based on period chosen during creating vacation kind:
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