When I have used SCROG in the past I threaded the veg plat into the net and topped/pinched them before going into flower, Some user will thread the plant into the net while in flower other just use it to create an even canopy for when switching they all stretch equally.
If this is your first time I would try and use it to create an even canopy then just let it grow out as is. I also tent to strip all mini bud sites below the canopy/net as they don't really grow into anything.
Good Luck!
***disclaimer, multiple people are answering all questions as there is a contest called GOTM, when a user is selected as the answer they get a point. Please see the contest page for information regarding the details:
growdiaries.com/giveaways/GotM-August-2022
Please note, when you reply to anything on the questions part of Growdiaries website, no one will be notified of this. Not even if you use a "@" tag in their name. Best to reach out to them in DM using your inbox, it can be found in the bottom right hand corner of the site. It's the small paper airplane button, it will be highlighted green if you have new messages***