I am doing an quick estimate for adding EMS control to an existing HVAC system (schools) which incorporate the following measures

1) Automatic thermostat setbacks for building occupation
2) Demand controlled ventilation
3) Economizers

Here are my "challenges"
1) Simulation with setback temperatures shows no reduction in energy
2) I am unsure how to handle DCV
3) Simulation with economizers show very little reduction

I would appreciate any pointers, suggestions, etc. on what to do here.
I would especially appreciate any example files to see how you input the data to get proper results.

Thanks in advance for any help.