Calcium or magnesium which is better for PCOS?

I read lots of blogs, health coach articles online and most of them talk about importance of magnesium and its impact on PCOS
As soon as you have been diagnosed pregnant, your gynecologist will recommend calcium, magnesium zinc pills on regular basis. This varies depending on your case. They give list of medicines to take during pregnancy including pre-natal vitamins some medicines based on blood work etc.
At costco we find kirkland brand which is combination of calcium, zinc, magnesium. There are ton lots of options and have confirmation from gynecologist
Now, coming to the question is magnesium important than calcium, I don't know as I'm not a healthcare professional. However, I found a medical publication that says calcium is the most important for PCOS. Magnesium has nothing to do with insulin resistance the way calcium does. So, take recommendation from your doctor before pregnancy, during pregnancy and consume proper quantities of calcium, magnesium, zinc as recommended