Start off by making a custom template:
[root@SME]# mkdir -p /etc/e-smith/templates-custom/etc/ssh/sshd_config
[root@SME]# echo "Protocol 2" > /etc/e-smith/templates-custom/etc/ssh/sshd_config/20Protocol
Then expand the template and reload the service:
[root@SME]# /sbin/e-smith/expand-template /etc/ssh/sshd_config
[root@SME]# /sbin/service sshd reload
That's it, you're done!