Tabular Form with updateable keys??? Help!!

Question

I have been trying to set up a timesheet/scheduling package using my PT job as a real world framework from which to pull ideas. The job is at a concert venue.
The idea is to be able to schedule an event, then add existing employees and add the appropriate employee to that event.
I have the tables already setup: EVENTS which consists of 'event_name', event_time_and_date, unique_event_id(priKey), etc... Employees which is first,last,empnum(priKey),etc.... And most importantly a Schedule table which is empnum(priKey,foreign to employees), eventid(secKey,foreign(sp?) to unique_event_id), time in, time out, etc....
Everything is great except that I cannot add an employee to an event using the Tabular Form as the empnum primary key needs to be defined by a dropdown LOV(my criterea) and the eventid needs to be defaulted to the passed in value. It seems the Form is not setup to operate that way. I have included a link to my mock-up on oracle's free HTMLDB space so that the lucky individual who decides to aide this lost soul can see what I'm on about. I have been able to do it via single drop downs, but that is one person at a time. The table is the best way visually to see who has, and has yet to be added to an event.
http://htmldb.oracle.com/pls/otn/f?p=38803:1
Click on schedule and choose 'Assign Employee' and click the event in January to get to the 'Add Employee' page.
The number present on the page should be hidden but is visible for debugging purposes. It is the unique event ID that the SQL bind refers to filter the list to the event in question.
Thank you very much,
brux2dc

Answer 1

From the trigger code I see a new PK being generated. Just so I am understanding what is going on, the new pk will in no way be used except to keep the tabular form in order.
The data in the intersection table will look like this:
EMPNUM(PK) | EVENTID(PK)
1 | 1001
1 | 1002
1 | 1003
2 | 1001
2 | 1003
3 | 1002
The tabular form will enter data so that an already existing eventid will be associated with multiple empnums. The eventid is passed to a hidden textbox. This is where the fixed eventid comes form and the empnums become the only variable per new row.
What should happen when I click on Add Row is that a new row appears with the eventid already set as PK1 and the LOV with EMPNUM as PK2. So before insert the screen would have:
EMPNUM(PK) | EVENTID(PK)
1 | 1001
2 | 1001
3 | 1001
5 | 1001
I just wanted to clarify further what my intent is. I appreciate all your help so far.
brux2dc