CHAPTER 2Principles of GUI operation45Figure 22. Refresh Menu ItemConfigurationLockLock GatewayThis command locks the Gateway for other users to perform con-figuration changes.The user is granted a requested lock if no other user has beenlocking the Gateway configuration before. A “Lock” granted con-tains a timeout. After this timeout is over, the lock will be releasedautomatically unless it is renewed explicitly. A configurableamount of minutes (default 2) before the automatic release timeexpires, the user is warned by the GUI by the expiry reminder. Thismenu item is disabled (greyed out), when (and as long as) a lock isheld.Figure 23. Lock Selection
