The Platform Manager is not accessible through the EMA.
Use this command to enable DoD mode, and to enable/disable CLI and/or EMA access for temporary troubleshooting and diagnostics.
% set system admin <SYSTEM NAME> dod cliAccess <disabled | enabled> mode <disabled | enabled> pmAccess <disabled | enabled>
Enabling CLI and/or EMA for DoD mode lowers the security posture of the SBC. Remember to disable CLI and PM access once you complete troubleshooting and/or diagnostics.