May I ask how to change the display level of rightMenuViewController？

I have a UITabBarController in which there are 4 UINavigationController, when I click on a button in a UINavigationController, to draw rightMenuViewController. But the rightMenuViewController is in the UINavigationController. I want him out of the UITabBarController. May I ask how to change the display level of rightMenuViewController?
I tried to do it, but it was a strange feeling. I can open the rightMenuViewController to the right in each UINavigationController. This is not what I want:
FilterViewController let = FilterViewController ()
PatientSlideMenuViewController let = PatientSlideMenuViewController (DDTabBarController mainViewController: (rightMenuViewController:), filterViewController)
.rootViewController? Window = patientSlideMenuViewController