Manpower Histograms-Remaining Hrs and adjsuted for Productivities,

first open the project and select send project and email the xer file to yourself. I always do this prior to making an major changes this way I can always revert back to this file if I need to its just a good practice to get into.

to adjust your remaining manhours you can use a global change to do this

when you set up the global change make sure that under Select Subject Area that you select Activity Resource Assignments

so it looks like you need twice as many men as currently showing based on your example you said it was showing 9 men and your actually need 18 men. So in the global change make it

Where               remaining labor units       is not equal to         0

then                remaining labor units        =        remaining labor units       *        then select {custom}  then make it 2 

then select change

if you like what you see then select commit changes

this will double your remaining manhours

double check your remaining durations make sure that they did not change. They any or may not change based on what your current duration type is set to.

When you view the Histogram use the remaining early category.