Plus and Pro subscribers can shorten a ride by up to 2 hours. You can do this by ending your one-way trip earlier than the end time of your reservation. The invoice will then reflect a reduction of up to 2 hours.
If you have a Start subscription, you will pay for the hours you reserved, regardless of whether the one-way trip ended earlier. If your one-way trip takes longer, the extra minutes will be settled afterward, regardless of your subscription.