As i place component on the schematic ,the component will placed in between 2 dot of grid due to which i am not able connect wire because wire will connect to those components whose terminal in on the grid dot
here is screenshot of schematic window
The grid is quite irrelevant to placing wires. Notice the two bubble-like shapes on the end of the resistors? That's the point you are supposed to start a wire connection or end it, depends on your design.