If the Integration Manager option is not available in Microsoft Dynamics GP (Microsoft Dynamics GP menu > Tools > Integrate > Integration Manager), either you have not registered Integration Manager or you do not have the proper user security settings. For more information about registering Integration Manager, refer to Registering Integration Manager. For more information about user security settings, refer to your System Setup Guide (Help > Contents > select Setting Up the System).
The default security task for Integration Manager is ADMIN_SYSTEM_012*. You can refer to KB 939542 for instructions on creating a security task specific for Integration Manager. If you are only registered for Integration Manager - Conversions, you will not be able to access Integration Manager from the menu in Microsoft Dynamics GP.