Automatically adding roles to new members can serve many useful purposes, from giving new members a cool colour in your chat, to giving out permission roles that can be taken away if needed, or for adding ping roles for announcements.
However, if you have a Discord verification level enabled that makes users who don't surpass the verification level needed, automatically adding a role when someone joins will bypass this verification filter! Pepe Manager allows you to set a timer from the moment a user joins to when they will receive the role, so the verification system is not bypassed!