I need to add on an existing Magento webshop an option for renting the products which in the same time are also for sale.
On the calendar must be also seen teh availability of the product for rent. If other client already booked that product that period of time must appear in red.
I don't need a full booking module or so, just an extra option (or attribute) for the products that are already for sale.
As simple as possible.