AppCloud : Sub-Event into Event

Hi all, i'm looking for "the best practice" to do that: Example: for a film festival: - i have some films - conferences - some "non predictable" Event ( ex: "Brad Pitt came with a new girlfriend " ;) ).

So, i'm looking for easier way to link all this datas to my Event. All those datas can be view as Event (or Sub-Event) .. but how to link Events to another ?

Cheers Patrick

you can use a custom object which has the event id as part of it.

{
    main_event_id : "11111", <---- ID OF EVENT TO LINK SUB-EVENT TO
    text : "Brad Pitt came with a new girlfriend " 
}