DHCP - delegate Permission to User for deleting leases

Good Day

I have a scenario where some Users need to delete DHCP-leases:

• Users aren't Domain Admins
• DHCP is on a DC (so no login on Server possible)
• The leases will be deleted by powershell-script (It works with DomainAdmin rights)
  It is psexec: 
  

.\PsExec.exe /accepteula \\DC netsh dhcp server scope 10.10.0.0 delete lease \\$userinput.domain

I added the Usergroup to DHCP Administrators, but that didn't work. 

I googled and searched some forums, but I didn't found a answer. 

Thank you for your help.

nc

n0rthclub