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The controls available to you will vary depending on your permissions, the task status, and the task configuration defined at business process design time.
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The task toolbar has five buttons, by default, for an open task (described below, from left to right):
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A task may be available to several users at the same time (i.e. functional position, organisation organization unit, or user group) while remaining unassigned. When one of those users enters the task, Emakin automatically creates a task lock on behalf of that user. The other users are still allowed to enter the task, but the task form is now displayed in read only mode, to prevent eventual conflicts of concurrent changes done by multiple users, and the task toolbar will display information about the active lock. When the first user exits, delegates, or completes the task, Emakin automatically removes the task lock.
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Every task lock has a predefined timeout as a safeguard, preventing a user from locking a task indefinitely. Upon task lock timeout expiration Emakin removes the lock automatically and the task becomes available again to all intended users.