Which department is more valuable between Administration & Human Resource ?

I think , our issue is how you can apply the effective integration between the HR functions and administration activities ?

We cannot implement HR policies or manage strategically any of HR functions ( Hiring , Training and development , performance management , compensation , benefits and employee relations  ) without having administration procedures that can support and identify How ? we can do what ?

thank you   

Administration it is the head of each company it take care of the work