Hey Julian,
This is indeed possible but is a custom-coding project, which type of project we are unfortunately not able to help with (see “Product Support” here for more information → http://theeventscalendar.com/terms).
With that being said, this knowledgebase article of ours might be helpful for getting started with this customization → https://theeventscalendar.com/knowledgebase/moving-the-ticket-form/
Check that article out and give things a try! If you don’t feel comfortable modifying code like this, then your best option would unfortunately be to hire a professional to assist further. There are many out there for hire, but we’ve got a list of some highly-rated developers here that might help you get started if you need to hire someone → http://m.tri.be/18k1
Cheers!
George