Every server has a different rhythm. These settings decide how much unusual activity it takes before Anti-Raid acts.
/setagecheck days, and auto-lockdown if too many brand-new accounts join at once.
On the Mass actions tab, define instant-ban limits for channels or roles created and deleted. From Discord the same settings are /criticalthresholds set type value and /criticalthresholds list. These catch nuke bots on their very first burst.