Company Secretary

There are 3 levels foundation executive and professional
After Bcom you can join executive level

Company secretary is a lucrative career option and can be completed in 3 years
Therefore you could be CS before graduation and the opportunities are plenty
IAS is difficult than CS and might take longer

As stated by the institute itself, here are all the opportunities
http://www.icsi.edu/student/careerascompanysecretary.aspx

CS scope has increased since the passing of companies act 2013
Earlier CA used to earn more now it has reversed
The appointment of CS is compulsory for companies having capital more than 5 crore
The compliance field is hot now and only CS can give services in compliance
CS can also be appointed as internal auditor
There are other opportunities as well eg due diligence in securities
Even CA is good
Chance of passing CS is greater than CA
Cs comprises of law related subjects like company law , securities laws
CA is more of accounting taxation and others
So overall go for CS if you have liking towards law

CWA & CS are professional courses ,to pursue then one has to be a graduate .However BBA is a generic course whcih leads to become a graduate like a BCom,BA & BSc .The scope employment is much more when one does a professional course vis a vis a generic graduation like BA, BSc,BCom,BBA

Hi
One can follow these steps to become a CS after 10+2:
1.Foundation Programme
2.Executive Programme
3.Professional Programme
In addition, the student has to undergo Practical Training for about 15 months which a student may opt to start after passing the Executive Programme.
You may find more details at www.icsi.edu

If by CS you mean Company secretary then
CS takes care of company law their enforcement , compliance
CS acts as link between shareholders and board of directors
CS is placed at Board of the company as Compliance officer and The company secretary
Mainly a CS takes care of company law , the board and shareholders meetings
Filing of various documents and reports
Dispatch of shares dividends and many other things

Dear Neha,
If you planning to do LLB after graduation or after Company secretary that will be wise decision bcz than you able to give your best in study.Both the course need time to understand and perform in the same.
So suggestion from my side first you should complete cs first than plan for LLb or any other further education.
All the best.