eap-psk and eap-sake configuration in freeradius

Hi everyone, I would like to configure eap-psk and eap-sake in freeradius server. These methods are still experimental. I found the configuration for clients such as wpa_supplicant but not for the freeradius server. I looked for it in Internet and examples provided with source codes. But still did not help. If you have any idea on how and which url to do so, i really appreciate it very much. Thank in advance, Thierry