Hi Sven,
Thanks so much for reaching out and for your interest in our products!
With Event Tickets Plus, you can create multiple tickets at a time, in the way that you are describing. You can set a limit for those tickets as well, so that once capacity is reached, no more tickets will be sold.
However, by default, when 1 ticket is bought, it will remove one ticket from the capacity, rather than 4 tickets. You can set individual capacities for each ticket within their Shared Capacity, so perhaps that can be taken into account when configuring this.
If this functionality is a requirement for your intended project, I’d suggest that a third-party developer would be the best way to make this feature happen on a short timeline. ? We maintain a list of developers who work with our plugins on our Knowledgebase here:
https://theeventscalendar.com/knowledgebase/find-a-customizer/
Let me know if you have any other questions on this topic!
Thanks,
Jaime