The subscription plans is something CBSubs adds (see CBSubs tab above for more info).

You can also add more description text in registration form either populating the Introduction text and Conclusion text parameters in the CB backend Configuration -> Registration Tab area.

You can also use delimiter fields to do this.

A CB field can be marked to show (or not show during registration).

All of this is described in the detailed documentation available to CB Documentation subscribers (along with many CB Team released add-ons) - sounds like you would benefit from this.