Who actually needs Auditor installed on their machine?
This depends upon what type of audits you have defined. For SQL Table audits, individual users do not need Auditor installed on their machines in order for these audits to take effect. However, in the case of Form audits and Table audits, everyone whose actions you want to be audited needs to have Auditor installed on their machine. NOTE: The person who administers the Audits will need Auditor installed regardless of the type of audits you have defined.
