I am trying to place sensors in a specific place to measure stress more quickly in simulation. I tried to fallow http://help.solidworks.com/2013/English/SolidWorks/cworks/t_Defining_WorkFlow_Sensitive_Sensor.htm and it seems like I can choose a point in any area, but when I try to do it I can onlt choose the edge of a feature.

Is there a way to choose a random poisition in the surface face?

I am using solidworks premium, do I need simlulation premium to do this? I am just doing a static stress analysis.