Responsible for the development of the company's policies Are human resources management or Board of Directorshi

Company Strategy create Director / Owner of the bussiness.
HR function - is the center of expertise, is monitoring and coordinating all the process in the company, and initiate ideas for improving the situation in the company.
Creating HR Strategy fully depends on Bussiness targets.
All policies, programs and processes in the company are one of the part Employee Value Proposition.
HR as expert give you many Analisis of the situation in the Company and instruments for doing your company better.
If Company needs to implement some policies Director have to support and initiate it.
Ideally if HR command and Board of Directors will do it together, discussing, in this case the solution will have both responsibility and both motivation to prolong any start up things.