When we click on the component portal in menu then (the page with ADD button display) Then the following below PeopleCode Events will fire.
Search Processibg in Add Mode:

Record Field FieldDefault

ComponentRecordField FieldDefault 

Record Field FieldFormula 

Record Field RowInit 

Record Field SearchInit 

ComponentRecordlevel SearchInit 

-->Enter the Employee and click on Add

Record Field FeildEdit 

ComponentRecordField FeildEdit 

Read Further:http://hrmspeoplesoft.blogspot.com/2010/05/page-start-to-display-in...