Essentially the basic version of Sales Motivator only has the functionality to display a motivational message to encourage the customer to spend more. It doesn't have the capability to offer discounted products or to offer free shipping and is mainly used to advertise that kind of deal. You would need to have some other way to do these things.
The exception to this is with Sales Motivator Premium's functionality to offer free items. In this circumstance the app is able to offer a free product if the goal is reached, and a free version of the specified product will be added to the cart.