No the steps are not the same.
One thing to remember is you only have Endpoint Discover capability in DLP 12.5.1 for Mac, nothing prevent wise. That is coming still.
Have you created the Endpoint Agent Package yet? Go to System -> Agent -> Agent Packagin and create the agent instllation there. It will include the passwords, and the Endpoint Prevent server (Name or IP Address).
Once this is done you will have a DMG file you can deploy like any other Mac product.