Book building process: regulatory rules on lead book runners, electronic bidding, price band disclosure and allocation mechanics. The Schedule sets a regulatory framework for book building: a single lead book runner (with co-runners/syndicate) must underwrite issues and disclose underwriting arrangements; issuers must contract with on-line stock exchange systems and appoint registered intermediaries as bidding centres. The red herring prospectus omits final price, with rules for floor price/price band disclosure and revision. Electronic linked bidding, uniform margin collection, ASBA procedures, public graphical bid displays, anchor investor allocation and lock-in, determination of final price by issuer with lead book runner, proportionate allotment rules, maintenance of books, and SEBI inspection rights are mandated. An alternate method for follow-on offers permits floor-price-based price-priority allocation to QIBs.