Child Table Change

What is the event in frappe that allows me to capture when a data is loaded to a secondary table.

Refer links below,

Child table trigger event in erpnext - Developers / Custom Script - Discuss Frappe/ERPNext

Form Scripts - API (frappeframework.com)

Trigger Event On Deletion Of Grid Row (frappeframework.com)

Thank you very much, I will review them.