Can I Change The Offer Letter Format?

Respected Seniors,
I am working with a PVT LTD company at Pune as HR Executive. Employee strength is somewhere around 30. I had given offer letter to them. But at that time i was not having enough knowledge about it, Now when i am browsing various sites, I come to know about so many things which i haven't mention in our offer letter. So now i want to change the format of Offer letter. Can i change? If yes than can any one help me out by topics which are compulsory to mention in offer letter?:idea:
Please help me..:icon1:

Grishma,
How are you, I am fine, can we be friends ???? :-D:-D:-D
Please post your copy of offer letter which your company is presently using and we will help you to add / remove some points from it..
Cheers gee thanks buddy ;) :-P:-P

Dear Ravi,
Due to company policy i wan't be able to upload offer letter. but i wanted to know that whether is it possible and legal to change.

yes grishma you may can change the same by informing to your authority and giving amendments in the previous offer letter which you had given to your employees.
Thanks and Regards
Akshat Bhatnagar
+91-9868554499

Dear Grishma,
You can change the appointment letter.
1. For new joiners, you can issue the appointment letter with all the clauses you want to insert (like probation period, pay structure, increment mode, statutory clause, termination clause etc)
2. For the existing employees, send the amendment copy of the appointment letter stating new clauses and at the end tell them rest of terms and conditions will be same as per the previous appointment order.
regards
Saravanan J
9884150003