Redmine

In my company there is a workflow, according to which each issue have a stage that controls by managers, developers, testers and so on.
Lets provide a workflow as a graph in which the top - issue status, and transitions - a status change.
Tester nothing to do with the problem before referring it to the test. Then the tester in such graph will have some isolated vertices. The idea: don't show the issues to user if it status are isolated vertices at workflow.

The principle is: the user should not see issues which, according to issue workflow, does now allowed to change it.

In this case, no change in access rights do not need. User still can view any issue if have access rights. This feature is only making the work more efficient by reducing unnecessary information on the screen.

I would like to be able to enable/disable globally through the Redmine settings, as well as the user's ability to turn on/off this function in own account settings or turn on\off at the page Issues (maybe as filter).