This user manual provides a step-by-step guide for registered members of The Institute of Chartered Accountants of India (ICAI) who are HO Incharges. It details the process of applying for a change in the firm's name using Form 117. The guide covers logging into the ICAI website, navigating the service portal, and completing the necessary application steps. This document is essential for partners of existing firms looking to update their firm's name.