Unlock Admin accounts by normal use account

Hi All,

We have a very distributed setup where in each region we have atleast one Admin account. We have a Global Service Desk which can Unlock,Reset the password for normal users. But they are unable to reset or unlock the password for Admin account.

So I would like to know is it can be possible. If Global desk can reset the password or Unlock the account for normal users can they do it for Admin account as well.

Thanks HA