Holiday schemas are used to plan when some group of employees will not be available. Each country may have different national holidays during which most employees will not be available. Like "Work Hour Schema" holiday schemas are used to calculate how much work log an employee should enter. Calculated amount is shown on tooltip of corresponding table cell. If calculated required work hours for a day is 0, that cell is shown as if it is a weekend. Note that in addition to holidays, work hour schema also affects daily required work hours. At installation a Default Holiday Schema is created and it can't be deleted. Any user who is not assigned a custom holiday schema is assumed to be a member of this Default Holiday Schema.
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