Hi Daniele Cruciani,

Thank you for your interest in our plugin.

At the moment in our plugin we don't support this option to show the calendar and let customer to pick the duration by selection 1, 2, 3 hours. In our plugin you as an admin set duration for the service, if you set 1 hour the customer will be able only to book one hour. However, we have extras for services, where you can create one Extra that will be like Extra duration and set it to 1 hour and add some limit in capacity so the customer can choose whether he wants 1 extra, 2 extras etc. In that way once customer comes to the booking form he will see option to choose service and then when he selects the service he will see option to choose extra. If you have just one service like Renting then the step for choosing service will be skipped.

Other option if you have just one service is that you create several services like '1 hour renting', '2 hours renting' etc. and set different duration so the customer can choose like that. In that case you can for extras these things that are added on the right side of this booking form that you have sent me and add prices for each extra, so you can get this calculated price at the end.

You can try our booking forms here to see how they work and also try options on the back-end. Extras you will find on the Service page once you open some service. More about our services and extras you can also read here.

Best regards.