PR Generation SNP - frozen period Time fence - APO

Dear Experts,

I have a specific requirement

During particular Time frame / calender i dont want system to generate PR

For instance for the year 2015 from  Feb 11 to Nov 16  system should stop generate PR , even there is forecast/Demand

can we use time stream calender or Time fence if yes how to ?

please give your ideas 

Thanks

Regards

Raj