There is a problem...
In the request there is a task list which are sorted according to process of passage of the request by experts. Dependences are put down - following task depends on performance of the previous. On idea the task can't be closed it is not closed yet previous, but upon this rule doesn't work! What not and where to correct?
And the second question. How to make so that tasks which are assigned to one group of experts couldn't to close other groups of experts?