Mauer Themes › Support › Stills › Theme Options
I don’t have a theme options section so I can’t change fonts, welcome message etc.
I’ve looked under Appearance, Settings, Tools – nothing. I think it should be a stand alone tab but it’s not there.
You are right — Theme Options will be a separate top-level admin menu item. What you need to do to have it show up is install the required plugins, namely the ACF Pro. For that, please follow the first section of the User Guide.