Adding multiple service appointments in marketpress

Hi, I have installed appointments+ and MarketPress. I want to create a list of services to be performed (car installations). Each service has a price and a time. If the user want to order several services i.e. oil change ( xx$ - 1 hour) AND Wheel change (xx$ - 1 hour), the total will be xx$ and two hours. This will have to be reflected in the calendar when booking.

When I list the services in appoinments+, I get a dropdown but no "add to cart". If I put it in Marketpress products, I can add to cart, but no link to schedule.

I have been through all options and shortcode, but I don´t understand the relation. Can you give me some help on this?