Oracle IRM Desktop looks for configuration settings in the following keys, in order:
HKLM\Software\Policies\Oracle\IRM (machine wide policy)
HKCU\Software\Policies\Oracle\IRM (user policy)
HKCU\Software\Oracle\IRM (user setting)
HKLM\Software\Oracle\IRM (default setting)
The installer can be used to set the default settings (4 above) by passing in installer parameters (as described in "Silent and Unattended Installations").
A user can override these settings through the Oracle IRM Desktop Options dialog (3 above).
To lock settings so that they cannot be changed by users, the policy keys must be set by group policy (1 or 2 above). The sub key path, value name and type information required to set group policy is given in "Registry Key Information".