You must have a Veryfi account and be logged in for the links to work for you.
Navigate to your profile https://hub.veryfi.com/me/?type=profile
Under "SIGN ME OUT IF INACTIVE FOR" change it to a value that meets your needs. The maximum time out is 1 hour per inactive session.
Finally, press the blue SAVE located in the bottom right corner of the window.
That's it. If you have questions about this then please email firstname.lastname@example.org