Within each price plan there are specific configurations for specific features. This allows you to control these items on a price plan by price basis.
Highlights of plan items:
Current plan items under individual price plan control:
Some addon specific price plan items
Look within the following for each price plan:
PRICING > PRICE PLANS HOME > [EDIT] (next to a price plan) > COST SPECIFIC > (scroll to bottom of that page)
The above mentioned section looks like that in the red box in the following screenshot:
Within that screenshot you'll notice: