Workaround to add per-project authorisation to Dradis Pro (danger! ugly hack ahead) This will restrict access to project 84 to the 81, 85 and 86 users.

projects_controller.rb

class ProjectsController < AuthenticatedController
  before_filter :deny_access, :only => [:show, :destroy, :use]

  // ...

  protected
  def deny_access
    if (params[:id].to_i == 84) && ![81,85,86].include?(current_user.id)
      redirect_to projects_path, :alert => 'Sorry, but the Force is not sufficiently strong within you to work on that project. Choose another one (and continue your training).'
    end
  end
end