If your employees have paid public holidays, you need to import public holiday calendar . So, you have to download the ics file first .
To download the ics file, please follow this link https://www.officeholidays.com/subscribe
Choose the country of the holiday calendar .
Copy Text and paste in new tab , then ics file will be dowloaded .
After you download ics file,
1. Go to 'Setting'.
2. Click on 'Policy' and choose one of the policies you want to import holiday calendar.
3. Under the leave setting, click on '+ Import File'.
4. Choose the downloaded ics file and click on 'Import'.
5. Click on 'Update Policy' and 'Confirm'.
Tutorial video for details: