Figure 4: Settings-­>Time Settings-­>Holiday - Grandstream Networks UCM6100 How To Use Manual

Click on to edit the holiday.
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Click on to delete the holiday.
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Click on "Delete Selected Holidays" to delete multiple selected holidays at once.
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How to Use Office Time and Holiday on UCM6100 Page 6 of 13
Figure 4: Settings-­>Time Settings-­>Holiday