In the HCL Knowledge Base, there is an article, https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0099516, on how to configure Sametime 12 to start automatically after the operating system starts.
And what is the procedure?
This is a companion discussion topic for the original entry at https://alichtenberg.cz/how-to-start-sametime-automatically-when-the-os-starts/