Can an event: add, modify, delete records, hang the trigger, and if so, how?

[RGF]

Can an event: add, modify, delete records, hang the trigger, and if so, how?

[yuri]

Not sure if I understand. Look to workflow feature.

[RGF]

After comebody to change an Opportunity, I want to change the Assigned User for this Opportunity, through the API or other way.

[yuri]

It's implemented in Workflow.

[RGF]

Thank you!