Transition is allowed, if a Date is reached without having exceed a delay expressed in seconds.
Select the Date Time to control, and the allowed Exceed delay,
When defined, there is no special configuration.
The Condition configuration may be done in XML in Workflow descriptor as follow :
<condition type="class"> <arg name="class.name">com.atlassian.jira.workflow.condition.DateReachedCondition</arg> <arg name="maxExceedDelay">3600</arg> <arg name="customFieldName">Wanted Date</arg> </condition>
Here is controlled if the date named Wanted Date has been reached around 1 hour ...
<condition type="class"> <arg name="class.name">com.atlassian.jira.workflow.condition.DateReachedCondition</arg> <arg name="maxExceedDelay">3600</arg> <arg name="customFieldId">customfield_10120</arg> </condition>
Here is controlled if the date, with customFieldId customfield_10120, has been reached around 1 hour ...