Dear Deepan,
Please create two different groupings and create different work schedules as per the requirement above. In Ramadan even though 6 hours there may be possibility of having lot of breaks in 6hrs you can control through break schedule.after Ramadan move them to normal schedules in IT007.even if you have any problem we can control through PCR as well, but please keep pcr option as a last option try to build your logic in standard.
Please let me know if you need any help.
Regards,
Dora