Become superuser or a user assigned to the DHCP Management profile.
Type a command of the following format:
# dhtadm -M -m macroname -e 'option=value'
For example, to add the ability to negotiate leases, in macro bluenote, type the following command:
# dhtadm -M -m bluenote -e 'LeaseNeg=_NULL_VALUE'
Note that if an option does not require a value, you must use _NULL_VALUE as the value for the option.