When the second stage is finished, the Server Migration Utility gives you the opportunity to start the Linux POA immediately.
However, it is preferable to configure the Linux POA to run as a non-root user before you start it.
Access the Linux server, then follow the instructions in the following section of the GroupWise Installation Guide for your version of GroupWise.
GroupWise 2012: Running the Linux GroupWise Agents as a Non-root User
GroupWise 8: Running the Linux GroupWise Agents As a Non-root User
Return to the Server Migration Utility, then select Start the Post Office Agent on the Linux Server.
Click Finish.
Continue with Post-Migration Tasks for a Post Office.