identify setting tool

Dear All ,

Actually I was trying to identify setting tool ,
but I have Question and I need help from you .

I put identify in my web map it is working , but i dont want identify working for all layers in my web , only I need for specific layers ,

that when I using or I choosing identify from (All layers) , it is mean working for all layers but I dont want to do that !!!

how can do that or how can setting that ??


thanks for helping
regards