Multiple Agents instances need on same Database Server

Multiple Agents instances need on same Database Server

I am trying to replicate Quickbooks Online from three (3) company files to a single MySQL database. Each of the QB connections is in its own Workspace so I have three (3) Agent Keys for the same MySQL machine. Is there a way to pass the Key for each of these to the Agent exe file as a parameter at run time? Or can I have three instances of the Agent UI running simultaneously each with its own unique Agent Key? Open to alternatives! Thanks.