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When you put you cursor over the vacation, you will see the name of the vacation given by the employee.
By checking the "Hours worked" checkbox you can get the hours visible to the vacation calendar.
(vacation-calendar-entered-hours.png)
Delimiting employees, based on their skills and qualifications
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When you are trying to change any company's basic information setting the application will ask for your password when saving changes.
Approving vacations
Time reports > Time reports for payroll
If the report has everything in order you can approve booked work hours. Approving hours locks them for payroll purposes. This will also lock the vacations, which means that they can't be changed.
To approve hours in the report you must click the "Approve"-button. Clicking an approve-button approves all of the hours to the date selected.
When the button is green none of the hours have been approved. Orange means that some of the projects have been approved. When the button is grey all of the projects of the day have been approved. Approving hours locks the notes too.