discount bundle - how to setup correct?

Hi,

I don't understand the documentation on the discount bundle: eventbookingdoc.joomservices.com/basic-setup/discount-bundles
The docu states that I can choose the number of events which have to be selected so that the coupon will be calculated.
So I would expect if I set the number to 2 I need two events in my cart to get the discount.

but this is the view I have - see screenshot.

It looks different to the documentation.
So question is: how can I select the number of events that have to be booked in total?
It would be perfect if those booked events can be selected e.g. only when event a and event b are together in the cart...the discount is counting. If only event a or event b is in the cart, no discount will be calculated.

How do I configure that? Based on the docu I'm a little bit lost/confused.
Thx for your help!

Br, Florian