No settings need to done for SSO on Load balancer
list of SPN:-
1: SPN for Loadbalancer:-
HTTP/loadbalancer
2: 4 SPN for Tomcat
HTTP/hostnametomcat1
HTTP/FQDNtomcat1
HTTP/hostname2tomcat
HTTP/FQDNtomcat2
you can refer the Guide which i shared for the complete command.