Products on Hero that are not connected with a reservation system, will have a schedule with dates in yellow:
This means that you will always have to contact the supplier to check the availabilty of a product. This can be done via phone or email.
Once the availabilty is confirmed with the supplier and you want to book this in for your customer, the supplier will need to share the Supplier Refrence with you. You need to add this in Hero to be able to finalise your booking.
Once the booking is finalised, the supplier will receive the Product Confirmation Email.