This document discusses two types of IPO processes - fixed price issues and book building issues. In a fixed price issue, the offer price is announced in advance, while in a book building issue, the final price is determined after the bidding period based on investor demand at various price levels. The document then provides more details on the book building process, including how the lead merchant banker collects bids electronically over a period of 5 days to determine the final issue price and size. It also discusses the rights issue process which offers shares to existing shareholders through a letter of offer.