Hi,
You must have done proper manpower planning then only you must get these 100 positions.
Now categorise the position in different categories like replacement position, backup position, development position, operations positions
now grade positions like replacement position would be top priority as current employee has left and in order to handle ones work u need a person unlesss and until any other employee is not rotated to that position.
you can put for temporary basis backup positions on less priority as currently person is available to handle the profile, and u will require a person only once he lefts
so on u can categorise the openings....
after that you will be required to grade the openings within one catgoery itself and interaction with mangers, business managers to understand the requirements more precisely.
there is a different fun in working simultaneously on different positions, as on one job posting or intraction you will come across different profiles that will help you out in closing other positions. so njoy...... and have a gud luck.
In case of any problem do write back
Regds,
Seema