How to do seed run?

Wondering if I wanted to get more seeds what to do? Looking at using autoflowering strain. Is it as simple as just letting a male and female grow next to each other? Or do I just need to grow a male?

It takes two to tango. Yea you could just grow seeds all together then pull the small males and leave one. pull the small ones cause you only need one.

you could always grow a male and then take pollen from it in a bag and wrap one cola. that would have plenty of seeds.