In DHCP Manager, select the Options tab.
See How to Start and Stop DHCP Manager for information about DHCP Manager.
Select the option that you want to modify.
Choose Properties from the Edit menu.
The Option Properties dialog box opens.
Edit the properties as needed.
See Table 15–5 for information about the properties, or view the DHCP Manager help.
Select Notify DHCP Server of Change when you are finished with options.
The change is made to the dhcptab table. The DHCP server is signaled to reread the dhcptab table to put the changes into effect.