I am a little confused when it comes to determing what questions to use CM's on. 

I have to take a preemployment poly for a company that handles large ammounts of $. Anyways in the interview they asked me about 15 questions. such as have you ever stole money from a employer, have you ever used any drugs besides marijuana?

On about 4 of these questions I lied on and the rest I was honest or they didnt apply to me.

All of these questions I believe are the relevant questions and during the poly they will mix in other questions like is your name bob? Is the sky blue?

How do I know which ones to use CM's on If there is only about 4-5 I am really concerned about. I have read the section on CM's in TLBTLD but am still alittle confused on determining when to use them. Especially since I will obviously be nervous and hell and wont have much time to analyze what hes asking..