This session is an introduction to the creation and development of Extensions in CSD from the experiences of an actual customer and extensions we have constructed and the lessons learned as they came up to speed. Topics include: - Overview of the Extension Development environment: - Necessary user permissions for Administration. - Intro to SAAEA/SAAPA - Use of Chrome Dev Tools Output during Development - Source JavaScript - Introductory Extensions without using Angular (JavaScript) - Constructing a few simple changes that made life easier for our users. - Easy Extensions with simple Angular (JavaScript) - Constructing an example extension that involves JavaScript.