Corona COVID-19 Management : Only allow to subscribe to 1 event

Due to the new corona rules here I want my users to only subscribe to 1 event.

I am facing a problem with RS events that I would to explain by example.
My school celebrates its 20th anniversary that will be kept on Wednesday from 15:00 till 16:00
There are 200 students. I want the students to choose from 4 events: Mathematics, Sports, Art or Music. All the events are kept in a different place of the college.

The problem with RSevents is that students are subscribing to different events. But they can not be at the same place at the same time. So I want my users to only be able to subscribe to one event only.

Another example:

My client tries to manage a free festival that has 4 stages where 4 bands preform at the same time. In this time of corona everyone has to reserve a seat so the organization knows how many people show up. The way RSevents is now you can register at all 4 stages and only show up at one.

In my opinion I am not asking something really strange. There must be loads of people who face exactly the same issue. I can think of a lot of situations where my issue comes up. In fact this problem pops up with every event that starts at the same day and time.

Could you please consider to add this