Transferring agriculture land of our late father

My father died in 2012. Recently in Telangana, the government surveyed all agriculture lands. In this regard we obtained an EC certificate print out from meseva office and found that an agriculture land of10 acre in different survey numbers is in the name of my late father. We further inquired at the local revenue office and the VRO acknowledge the details are same in khataa book also. We 4 brothers and 3 sisters are the only legal heirs as my mother also passed away recently. We all brothers & sisters have decided to provide a no objection affidavit for one of my brother appointing him as the main applicant & giving him all the rights to transfer the said land to his name and to manage the situation locally. Out of 7 legal heirs 2 brothers & 2 sisters are NRIs. Kindly would you please help us with the best advice & the right procedure to transfer the said land. Appreciate if you would share us format of the affidavit & let us know what are the documents required from the legal heirs who are living abroad. Many thanks in advance for your valuable advice. Regards Mohammed Shaker Hyderabad Telangana