Vivek, if anyone cleared CS proff, then he can apply for Licentiate no. in this you are registered in member of Institute, but attestation authority will have not to you.
To get this, please read below
Eligible students who have complied with the following requirements may apply for enrolment as a Licentiate:-
Requirements
(i) A person who has completed the Final examination of the Institute may, within six months from the date of declaration of results in which he has passed the Final examination can apply for enrollment as a licentiate.
(ii) An application for enrolment as a Licentiate is to be made in approved form ST-8 alongwith annual subscripttion of Rs. 1000/-
(iii) Copies of date of birth and graduation certificate or PROFESSIONAL PASS certificate duly attested by any member of the Council/Regional Council/Satellite Chapter of the Institute or any Officer of the Institute.
(iv) A licentiate shall not ordinarily be allowed to renew his enrolment for more than five years after passing the Final Examination.