How to use WINDOW7.5 to output the BSDF files for 5-phase method

Hello everyone ,
There is a window without any shade facilities . I have the optical properties file of this glass. I can import it into the Optics . I want to use the WINDOW7.5 to output the BSDF file with xml formate of this window . And daylighting simulation will be performed in 5-phase method . How to set the software to export the accurate BSDF file ? What difference is there between 3-phase method and 5-phase method when output form the WINDOW7.5?
Thanks for your reply.

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