The BIOS Parameters can be modified and configured on DELL Desktops (Precision, OptiPlex & Latitude) using Dell Client Configuration Utility.
Dell Client Configuration Utility ver 3.0 can be downloaded here:
After the installations there are possibilities to configure different BIOS settings. In my case I wanted Wakeup On LAN to be configured:
You can choose Aftter running: Restart computer, enter the value for minutes and click on Create BIOS Setting Package.
With this action an EXE file has been created. This file can be easily deployed using SCCM Server and BIOS Setting will be unified on all machines .