Trigger Event Handler/ Execute Button using Script

Hi Expert,

I have few question.. . I have search in google but dint find any info related to below questions.

1) Can we trigger Event Handler using .absl script.

2) Can we execute a button using .absl script.

3)  Can we open a link(www.google.com) using .absl script.

4) Can we call/trigger Operation Types using .absl script.

I have raised this question because recently i came across a requirement where i need to extend a screen with Button. I have placed button on screen but i am not able to change it's properties( e.g: Onclick).By default button is binned to it's script. So i want to access either Event Handler or different Operations Types(e.g open link) using script. Below is the image for reference.

When i click on "+". It is not allowing to add other Operations Types.

Thanks,

Quddus.