yeah, Etka is right. but why?? for second question? why necessay signature for authorized person?
The answer lies here that it is not possible for directors to always be in touch with day to day affairs of the company. They may be required to g oaborad for clients or other stuff. so their signature is affixed by the method given in (Issue of Share Certificate) Rules, 1960 as to by means of machine, equipment or other mechanical means. And for authorized secretary, it is necessary to get a sign by means pen i.e. no meachnical means is available for them. Hence it is necessay for authorized secretary to get presence or else there may be chances of misuse of those meachanical means.