[CustomPress] How to create multiple custom fields

Hello,

I need to have a 3 custom fields that can have the possibility to be multiplied. To be more clear, I am building a website for an tourism agency and it needs to have the possibility to add different prices for different dates, so I would like to add 3 fields, start date, end date and price. But I would like to be able to have multiple possibilities to add these fields, not just once.

I hope I was clear.

Thank you!