It's easy! Follow the step below and come back when you are ready:
Click in the upper corner you should see "Sign Out"
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Plus, when you sign out, we'll make sure to save everything before we log you out.
Once you've filed your return, we'll also give you the option to save a PDF copy of your tax return to your computer so you can view or print it without having to sign in again. More info
https://ttlc.intuit.com/replies/3301211