How to delete an admin

[uncle_sam]

Hi, 

My organization had an admin of https://admin.google.com/

No one else has admin rights except him.

He left the company and now not responding.

We are not using a paid version so we don't have support service included.

I would like to make someone else the admin now, infact a group of people.

Someone please help on this.

Thanks

Satyam Prakash

+971 522661451/+918792