For a detailed explanation of agent updates, see Agent Updates.
If a Security Agent only has an IPv6 address, read the IPv6 limitations for agent updates in Pure IPv6 Agent Limitations.
Apply to All Agents: Applies settings to all existing Security Agents and to any new agent added to an existing/future group. Future groups are groups not yet created at the time you configure the settings.
Apply to Future Groups Only: Applies settings only to Security Agents added to future groups. This option will not apply settings to new Security Agents added to an existing group.