He also called for a framework for the council to ensure it will complete its achievements in a year.
Gen Prayuth laid down his instructions on the selection of national reform councilors at the Army Club this morning.
Also present were NCPO deputy chiefs, the Election Commission and new cabinet ministers.
Gen Prayuth said he was excited to meet the people who would bring Thailand to the democracy that is standard and would suit it and that the second phase of the NCPO's national reform roadmap was being implemented.
It is difficult to select 250 candidates from a total of 8,000-9,000 applicants, he said.
He called on the selection committees to do their work honestly and base their decisions on the knowledge, capabilities and achievements of candidates to guarantee maximum benefits to the nation.
He denied the charge that the NCPO already had its own list of national reform councilors.
Gen Prayuth said the reform councilors would represent different sectors so that they would propose a variety of opinions.
The selection committees will propose their shortlisted candidates to the NCPO for consideration on Oct 2.