This is possible with FuneralScreen, all you need to do is set the computer to turn on at a scheduled time through the BIOS. Second would be to schedule when to turn off the computer by going to the signage studio.

To schedule your computer to turn on automatically:
1.) Turn on your computer and start tapping on the <DEL> key
2.) Go to advanced then hit enter
3.) ACPI settings (bottom of list) and again hit enter
4.) RTC wake settings and enable

5.) set day hour minute second you want the computer to turn on and exit saving the settings.

To schedule when your computer turns off:
1.) Login to Signage Studio
2.) Click on the STATIONS tab
3.) Click on the station you want to work with.
4.) At the lower right hand side click on POWER SAVING.
5.) Click on Save/Upload

Video Tutorial