This document provides guidance for responding to colleagues' posts about business information systems. It instructs readers to respond by Day 3 of Week 2 to two colleagues in 1-2 paragraphs. It suggests examining how the systems could be used by their organization, discussing opportunities and challenges, or expanding on the role and implications of the systems. The document then shares posts by two colleagues - the first discussing HR and supply chain systems at their organization, and the second outlining how CRM, HRM, and accounting systems impact decision making and performance at their company.