Time Travel via Add-on integration

Having loved HA for 4 years I have finally found the time to dabble in AppDaemon. I can’t seem to work out how to Time Travel and choose a Start Time as I didn’t install via command line but via the integration Add-on. The docs refer to command line. I’m running headless via a RPi3 so can SSH in, do I need to do that and then start the app with the -s argument?.

Can anyone give me a clue as to what I need to do please?