Hi Mischu!
Thank You for your example...
Your request - a good one - has in essence been requested before by @TYancy that has the Hype interface change its behavior (details in the post by Trey below); where groups are easily arranged on a timeline and their actions~effects follow them.
@MarkHunte 's suggestion is also reflected in Trey's post.
Having worked with _Hype_ for a year now and Apple's _Motion_ app (similar in interface to _AfterEffects_) for many years - I find the motion graphic style of interface much easier~efficient to manipulate than Hype's current model.