PPM hours a day -ratio

Hi,

In PPM tasks the conversion of time units from hours to days is based on 24 hours a day. It should be corrected to working hours per day (e.g 8h/d). Where can this be maintained?

We have already maintained the following configurations and no effect was noticed:

1. Project Management -> Basic Settings -> Define Time Units (D Days, H Hour)
2. Project Management -> Basic Settings -> Define Locations (Calendar, Hours/Day=8h)
3. Project Management -> Structure -> Define Project Types (Unit = Days)
4. Project Management -> Resource Management -> Basic Settings for Roles -> Make General Settings for Distribution (Customer setting created: Distr.Unit=D, Period type=month, Hours per day=8,00, Calendar, Unit for Hour=H)

Could someone advice where else to maintain the hours per day –ratio?