In DHCP Manager, select the Macros tab.
See How to Start and Stop DHCP Manager for information about DHCP Manager.
Select the macro that you want to change.
Choose Properties from the Edit menu.
The Macro Properties dialog box opens.
In the Option Name field, specify the name of an option by using one of the following methods:
Click the Select button next to the Option Name field to select an option to add to the macro.
The Select Option dialog box displays an alphabetized list of names of standard category options and descriptions. If you want to add an option that is not in the standard category, use the Category list to select a category.
See About DHCP Macros for more information about macro categories.
Type Include if you want to include a reference to an existing macro in the new macro.
Type the value for the option in the Option Value field.
If you typed Include as the option name, you must specify the name of an existing macro in the Option Value field.
The option is added to the bottom of the list of options in this macro. To change the option's position in the macro, select the option and click the arrow buttons to move the option up or down in the list.
Select Notify DHCP Server of Change.
This selection tells the DHCP server to reread the dhcptab table to put the change into effect immediately after you click OK.