Urgent query on increase in number of directors

Dear Members,

A public limited company took approval from Central Government to increase its number of directors. However, the company did not appoint the directors even after one year of sanction by CG. Please explain the further course of action. Does the company need to seek CG approval again or  can it pass a resolution in its Board  and appoint directors now? Please reply its very urgent.

Thanks in advance!

Radhika