My microsoft app doesn't have auto save toggle, it is the latest version.

TP064339 Press on the downward pointing arrow (above where it says "Page Layout". It should open a window like this:

Here you can customise the Ribbon and Quick Access Toolbar (QAT). Make sure you select QAT and All Commands as shown in the picture. Now scroll down in the list on the left until you see 'Turn Autosave On/Of". Press the arrow to send the command to the QAT and place it where you want. What you see in the picture is how I set-up my QAT. It will look different for you, of course.