Dear Manisha,
The policies are always customized. The policies reflect the internal work culture of the company or even the mindset of the top boss. We, the members of this forum, are outsiders and do not know the internal dynamics of your company. Against this backdrop, it would be too difficult for us to create a policy. Nevertheless, you may design a policy on your own and upload it here. The senior members will correct it.
Alongside, let me put forth my other concerns as well. The Head Office of many companies works for five days. This happens even though at the plant level, people may work for six days. However, in the same plant, if a few departments work for five days and others for six days, then it may create discontent in the minds of those who will work for six days. They may perceive it as inequality and may question the rationale behind the unequal treatment. What if the staff that works on Saturdays start asking for extra wages? What will be your take on this?
Thanks,
Dinesh Divekar