How to change the duration of an after effects composition (extension)?

Question

Adobe After Effects

I have a composition from a preset pack, it lasts 10 seconds.

It doesn't have a slider to change the start and end duration, and I can't change its total duration. Looked - the code too is not present. I can change color and text. That is, there is no parameter at all so that I can somehow change the duration.
I think there is some possibility, because otherwise all these packs with presets are simply useless if there is a strict binding to timing

Answer 1

Hello
There are a couple of ways to change the duration of a composition:
Via the Project panel

1. In the Project panel , find and select the desired composition
   
2. right click on it
   
3. select " Composition Settings "
   
4. In the window that opens, set the desired duration of the composition in the Duration field
   

The second way is from within the composition itself.
If the composition is open in the timeline, then you need to click on the small menu button next to the composition name. And then repeat steps 3 and 4 from the previous method.

PS I don't know what will happen to the video and how the preset adapts to the new length of the composition - it all depends on how it is made. But in this way the length of the composition changes.