Zoom in and Zoom out to multiple clips together on a track

Hi,

Please take a look at my timeline before I explain what I am looking for -

As you can see there are many clips or clip segments on the timeline with transition effects. The timeline is final for output.

Now this is what I want. In the Green highlighted section the video will start from 100% and zoom in to 130% to the end. Then it will stay 130% at the non highlighted zone. Then on the blue highlighted zone, it will start from 130% and zoom out to 100% at the end. Effect would be applied only to the highlited track, not other tracks.

I can zoom in and out on each segment, but cannot apply this to the timeline. But as you know this is a fashion now to make your videos look a bit creative. So do you guys know any hack to do this rather than exporting the clip and then again apply the effect? I do not want to do that twice, so looking for expert's suggestion.