Mooncatanswered grow question 1y ago How? Just over the plants at the desired height. Not too high, so they don't have to grow into it, and not too low, so you can still tie them down.
When? With an auto, not really at all. Scrogs take a few weeks longer, and you just don't have that time with an auto without the process causing harm instead of benefit.
Just keep doing LST and save the net for the next run with a fem; otherwise, it just gets in the way at the end during harvest...