It sounds like you are trying to self-configure Avast, and therefore I cannot help you with that. Avast developers and the Avast Team have tested each product prior to putting this out to the public to be most efficient and I cannot and suggest or encourage any self-configuration of this software.
Here is an Avast comparison chart
http://www.avast.com/comparison-chart so you can see what each product has. All products contain the same AV protection, and you can change from the default settings although it is not recommended.