There are multiple charge settings that can be managed under this tab, including "Encounter Locking Turned On". If this is set to "Y" and "Encounter Lock Timeout (days)" is set with a numerical value, the end result is that charge encounters will lock after X number of days. Once an encounter is locked, it is in an non-editable state. At this time, it is not clear if an encounter can be unlocked nor is it clear how to unlock a locked locked encounter. Therefore, the current recommendation is to set "Encounter Locking Turned On" to = "N".