Can different working calendars be set and used in Project system

Actually we are going through implementation of SAP Project system, i would like to ask whether there is an option in SAP PS to set different working/factory calendars and use them for individual activity like Primavera. Because at some places there is 5 days working and at places 6 says working. Also holidays are different for different people/places. A uniform calendar for all activities can spoil the schedule of project in regard of planned finish dates when one enters a certain duration.

Kindly clarify this for me

Regards.