If you want to have an overall look at the Endpoint Encryption for PC (EEPC) 6.x product installation through ePO 4.5.... here is a simple illustration for your reference.
Please let me know if you have any queries regarding this.
Suresh Kumar A
This document has a checklist as well in the second page.
hope to see these type of diagrams and checklists in installation guide of all products. checklist is always a great way to reduce errors