Create parts from a model

Good morning everyone,

I hope I can explain my doubt clearly. My question is: I have drawn a set of stairs and a handrail on one piece. How can I convert the handrail in a separate piece to create the draws just for the handrail not for the handrail and the set of stairs all together.

Also related with this question, how can I create different pieces in a single draw, EXAMPLE: I have drawn the stairs, and I want to draw the handrail without having connection with the stairs and creating a separate piece.

Thank you very much! have a good day.

SolidworksDrawings And Detailing