Inactivity Session Timeout is a configurable period of time during which a user can be inactive and is used when you walk away from your computer or device and you have forgotten to log out. After the timeout expires, the user is locked out or logged off of the session depending on the minutes or hours you have selected.
Inactivity Session Timeout can be changed in your profile settings. Click on your name in the upper right corner, click on profile, click on the "security tab" and then select your Inactivity Session timeout from the drop-down menu, choices include 2 minutes to 6 hours or you can disable, then SAVE your changes.
*Use this feature for HIPAA compliance, Data Loss Prevention and to safeguard your customers information
Also see Inactivity Session Timeout - Global Team Feature - where the Owners of the team can set this as a global feature for all team users.