Okay, I couldn't find this information ANYWHERE... However, by scouring the dhcpd.conf man page I was able to come up with the answer.
The below configuration file example is the correct implementation for integrating FOG into your current network's isc-dhcp-server.
#internal LAN (eth2)
subnet 10.10.0.0 netmask 255.255.0.0 {
range 10.10.224.0 10.10.255.254;
option routers 10.10.0.10;
option subnet-mask 255.255.0.0;
option broadcast-address 10.10.255.255;
option domain-name-servers 10.10.1.11, 10.10.1.12;
option domain-name "example.com";
option tftp-server-name "10.10.0.10";
next-server 10.10.1.13; #Fog TFTP Server
option bootfile-name "undioonly.kpxe";
include "/etc/dhcp/lan.conf";
}
When I have time I might do a quick how-to just so SOMETHING else is out there for people who might be struggling to finding the correct config syntax/entries as I did...