How do you do that?
Do what?
Gatekeep
Some scanlation groups have their own pages where you need to download the chapters (so mangago and other aggregation sites can't pick the chapters up directly), distribute the chapters to their discord channels and nowhere else, even telegram or WhatsApp groups.
Aggregator sites*
Oohhhh, okay. Thank you!
That upload, the shitty typesetting, cleaning, and TL. Literally any series you could have chosen and you choose the one thats already being worked on lol. This is why the scanalation groups I work for are starting to gatekeep and saving the high quality stuff for people that actually deserve it.