Application of wind load

Can any one help me on how to apply the exposure level for wind load on nodes to a structure with many offsets and more than 3 stories ? whenever i give the exposures to selected nodes, or all the nodes, it doesn't apply the pressure to the desired nodes, and does so in the weird places, i mean where it is not suppose to. I have provided a picture of it too, Please require help.

Wriddhi Pratim Roy, Civil engg student. WB, India.