Buy 2 get lesser value item free

Hello. Can anyone please help on the below:

I have a Ticket Tag with 2 options (joaan & Entertainer)

If Entertainer is selected and order any two burgers, the lesser value item should be free.

Please help to get the above automated

Not topic i was looking for but start here;

1 Like

Thank you very much for the guidance.

Need yet another help in offering the lesser value product free (Only 1) from a group of products