Let User select Meeting

Hey, I have a couple of Users and now I want that Users can select an Meeting and join them. So i created an Meeting Entity and made an association to the Account Entity and I also made an Page where i can create new Meetings, but I dont know how to let the Users join in Meetings. I also want to show, how many and which Users joined the Meeting.   Hope you can help me
1 answers

It is just like trainee enlisting for a training event in this lecture: https://gettingstarted.mendixcloud.com/link/module/82/lecture/693 and it's next few slides.

So, add an entity Registration in between Account and Meeting and follow the lecture.