How do I level the number of men working on a programme with many 1 day durations?

Dear all,

I've been given the task to level a construction programme for P5.

This programme has a number of 1 day activites which makes leveling a nightmare as theres 100's of these activities. I thought of individual placing the activities and checking the histogramme to ensure there is a level number of men on the project, but this would take too long and there must be a easier way. I've tried to 'auto level' it but it doesnt seem to be doing much difference?!

Having a necessary milestone(end of blockade) which is required to be hit every couple of months might be one of the problems which is stopping 'auto levelling' to work. There is a limit to the number of men working in the area and therfore this might mean working weekends or 24 hour shift towards the end of a blockade but prelimanary we dont want to work out of normal working hours unless necesssary.

Can anyone help?