Hello smart,
I'm not in exposure to MRS. But I'll try to give some hint as per my judgement.
It is a pure technical matter.
The job starts with a Ztable having fields Symptom and Employee code. This is the answer to your point1. i.e., Link between these two parameters.
The second one is about scheduling. You (ABAPer) have to explore the enhancements in this area and develop a solution using the above ztable.
In fact the difficulty is not much expertise is seen among members in this area, because of which your earlier similar thread is still awaiting replies.
You may find this discussion useful: MRS (Multi Resource Scheduling)
Good luck
KJogeswaraRao