Under security settings in the desktop version there is an option to set the time to autolock enpass after a certain time idle period for either the system or the enpass application itself. However, if your desktop goes to the lock-screen before this idle period is up enpass will be locked as well and require you to enter your master password before you can use the app again. I would love to see a setting or check box that would allow enpass to stay unlocked for the entirety of the set idle period regardless of whether the operating system goes to a lock-screen or not.