Dynamic pricing depending of how many people you bring with you#2080

Hi, I want to manage group booking price for activities : one person book an activity for him and several other people he brings with him.
I want that the price per person depends on how many persons come together. For example, dynamic pricing :

• bringing 1 or 2 person with you cost 20€/person
• bringing 3 or 4 person with you cost 18€/person
• bringing 5 or 6 person with you cost 16€/person

Thank you

waiting for that for years.