Turn off lock on session end

Hi Everyone,

I'm having troubles with teamviewer automatically logging out of windows once a session has ended. I have a couple of digital signage units which need to be logged in order for them to work correctly. Previously I remeber there being a button which allowed the windows session to remain logged in - I no longer see this now. 

I've also checked options > advanced> lock remote computer - this is set to never 

Thanks in advance! 
teamviewer