When adding additional options to the DHCP menu, you may select the Add icon. In this menu you will be given the ability to complete PXE (Preboot eXecution Environment) such as:
Option 66 – “Next Server” is “tftp-server-name”. Option 67 – “Boot File” is “bootfile-name”.
Simply specify the option name and value. Values listed on this page may contain a number, IP address, IP address pair, MAC address, or quoted string depending on the option.