CST - Spherical Grid

Hello everyone its nice being one among you, i need a help can any one tell me how to construct a spherical grid in CST Studio Suite using "Macro", "construct parts", spherical grid but can any one tell me the rule how to construct it exactly as per the standard, if any tutorial available i would be happy if you share it here or "p20220420@hyderabad.bits-pilani.ac.in"