Within Teamwork Chat, you can log out of the app at any time.
Browser and desktop app
Click on your profile icon in the upper right corner of the app, and select Log out at the bottom of the dropdown menu.
In the Teamwork Chat mobile app, click your profile icon in the top right corner.
You can then click Sign Out at the bottom of the profile menu.
For more information, see: Logging in to the Teamwork Chat App