So far I have found " light definitions" in OS, And I would like to know how can I define the location and position of my lights in my model (Sketchup or even OS)? for this purpose radiance should I use or energyplus is enough? Thanks in advance for any guidance.

So far I have found " light definitions" in OS, And I would like to know how can I define the location and position of my lights in my model (Sketchup or even OS)? for this purpose radiance should I use or energyplus is enough? Thanks in advance for any guidance.

So far I have found " light definitions" in OS, And I would like to know how can I define the location and position of my lights in my model (Sketchup or even OS)? Thanks in advance for any guidance.OS)?