Let's assume you have rented a construction vehicle for 12 months and pay a lease fee of €2,000 / month. Due to the reduced order volume in winter (Nov-Dec.) you only have to pay a reduced lease of €500/ month thanks to the pay-to-use option.
The difference (2x €1,500 = €3,000) is then distributed over the remaining ten months. The monthly lease payment thus increases €2,000 + € 300 = €2,300 for the remainder of the lease.
The seasonality of business shall be taken into account when drafting the lease.