The IEC 61850 configuration needs to be set using the CET850 application, freely downloadable on Schneider Electric web-site.  You may use the link below, or simply search for the CET850 software.  The configuration procedure is explained in the Communication Manual for the Easergy P5.

https://www.se.com/ww/en/download/document/CET850+IEC850+configuration+tool/

Released for:Schneider Electric Singapore