You are correct assuming first that ENS 10.5 contains multiple modules/components..
1. McAfee Agent
2. ENS Framework
4. Thread Prevention
5. WEB Control
6. Optional Adaptive Threat Protection..
When creating a install / deploy task you would always install Framework first and then chose whichever components you want to install additionally. (use same task to preform all installs) For slim just AV solution you would chose ENS Framework / Threat Prevention and Web Control.
hope this helps..