ahhhh if you did a little research it's quite easy. I might make a Fem seed guide to put the rumors to rest.
1. Take a fully mature indica female, two months into budding and let her bud for another 2-4 weeks past her prime.
2. Out of stress of not being pollinated she will try to pollinate herself.
3. She will create female pollen sacks called bananas.
4. Harvest these bananas when they are fully developed.
5. Use the pollen from these bananas to pollinate a female plant that is two weeks into flower.
6. wait another month and a half.
7. Harvest fem seeds and they are 90% fem and 10 percent male.
8. Enjoy an easier grow season. lol
Technically they are hermie seeds because they are part male but its only a small percentage.
Another problem with these seeds is after one grow they should not be used to breed again. The seeds produced by a these fem plants will have even more male characteristics each time they are used to rebreed.
So its a bad idea to use them over and over.
Did I answer your questions?
If you are confused about anything Pm me again.