change Admin for entire site with all applications

change Admin for entire site with all applications

I need some assistance in changing the admin for my zoho creator site to another user.  I will no longer be involved with any of the applications as I am leaving the company.  For a specific application, it is quite straightforward. 

Can you provide  step by step instructions on how to change the admin for the site and not just the specific application?

Thank you 
Edith