Trending @Infosys; Work from home balance query

Hi guys. Need information regarding wfh balance. If we have like 20 working days and 10 days we report to office remaining 10 days will come as wfh balance? Like do we need to apply for wfh for remaining days? Or wfh balance is extra on top of 10 days wfo!. Or by default remaining days will be wfh?. I need proper explanation of policy please help