Follow these steps to successfully change your Session Timeout setting:
1) Click on the Preferences menu located in the upper right hand of your account. The preferences window will open.
2) Click Change Security Settings
3) Underneath Session Timeout enter the desired number of minutes you'd like your account to remain open with inactivity.
NOTE: You may enter '999' minutes to set your account to never automatically logout.
4) Click SAVE in the top-left corner of the preferences window