help with creating 3d antenna array in hfss

Hi, I am trying to create an antenna array with five antennas using hfss. I want the antennas to create a pentagon with equal spacing in between. Any suggestions to how this can be easily accomplished? I have tried using the coordinate system to move objects, but I cannot seem to get them in the correct location, and moving them in the modeler is a lost cause. Please let me know any suggestions.