Create the Work Breakdown Structure
You are starting to create the project's WBS, focusing on the CRM implementation, create a WBS for this part of the project, being sure to define the phases and the deliverables created in each phase. Choosing one deliverable, define the activities needed to create that deliverable. Also define the dependencies between each of the activities.
Use Microsoft Project to document the project's WBS. Additionally prepare a document with instructions as to the appropriate view to communicate the WBS to Ben and his team.