21 March 2016
There is no specific format, you can use the below mentioned format as per your requirment
To The Board of Directors [Name of the Company] [Address of the Company] Dear Sir, I, [Name of the person] S/o[Father’s Name] ,R/o [Address of the person], hereby give my consent to act as Company Secretary of [Name of the Company], pursuant to Section 203 of Companies Act 2013 read with Companies (Appointment and Remuneration of Managerial Personnel) Rules, 2014