Which elements are you using exactly?
Which Wix-APPS are already integrated into your project?
What you can see here is nothing else than a dynamic table, which can be easely created by the help of a REPEATER.
If you are using predefined stuff like Wix-Events and you want to modify the APP, you quickly will get problems. That means you will have to search for alternatives, either mix your own creatinion with Wix-Elements, or even code a complete own custom Events-system.
But there are not really much information about your project you show.