If I / a normal User Creat a new Issue. Fill all the necessary things and fill also the assignee Filed than he clicks on review.
At the moment It goes in the next step and he sees the accept/ reject Buttons. And can click on it.
But that doesn't make sense. Only the administrator to whom he assigned the ticket should be allowed to do this. The normal user, the role, should have no right to click on the buttons. The best would be the user click on review and the issue will be closed.