DHCP - configuring limited adinistrative rights

Hi,

for a customer I'm trying to grant limited administrative rights for a
HelpDesk group. The goal is to enable the group to be able to create and
delete Reservations and (preferably) nothing else. I do not want to place
the HelpDesk group in the DHCP Administrators group. What I am looking for
is probably a solution where the HelpDesk group has DHCP User rights with
the additional rights to enable them to create/delete the reservations.

Is this possible? If so, then I'd be grateful for any pointers as how to
implement it.

Cheers
/Christian