autoEnable

Whether to automatically enable Security Hub in new member accounts when they join the organization.

If set to true, then Security Hub is automatically enabled in new accounts. If set to false, then Security Hub isn't enabled in new accounts automatically. The default value is false.

If the ConfigurationType of your organization is set to CENTRAL, then this field is set to false and can't be changed in the home Region and linked Regions. However, in that case, the delegated administrator can create a configuration policy in which Security Hub is enabled and associate the policy with new organization accounts.