I finally figured out how to do this from the employee perspective (Non domino lotus admin). Everything online seemed to cater to the admin server side of things. This shows you how to resolve the enable / disable auto login for Sametime Instant Messenger
STEP #1 - Go to File --- Preferences
STEP #2 - Select Sametime section
Step #3 - then select your active server (if applicable)
STEP #4 - Once you select the active server your window should look like the example listed below. Check or uncheck (depending on what you want to do) and click apply - okay at the bottom

Hope this helps. Best regards from your friendly HR Dept.