There are not any additional options than the ones that you are seeing on that screen. 
Hello, I have a DELL T310 with idrac6, one raid array with XenServer and one single sata disk with windows 10 directly connected to the sata motherboard port. I want to select the first boot device from the perc control pannel to start xen or windows 10, but I can't figure out how to do, I have tried all boot options from the perc web control pannel. I need to somethings in the bios to perform this action? Thanks. 
Idrac6 select boot from percRadi6 or internal single sata Disk