Hard Drive Permission to Share Specific PC on Network. Help

Hi everyone, I just want to ask, how am I supposed to add specific PC connected on my LAN. see Image below. Image: http://s10.postimg.org/6tvpgqx2h/image.png you see, on the Properties of my hard drive > on the sharing tab > advance sharing > permission > then I want to add one. I'm stuck on entering the object name.. what I want to enter is my Other Laptop connected on my network.. by...