I have P3Dv5.4 installed on a Windows 11 PC with the latest GSX2 version installed. I am trying to create a custom pushback procedure at KSFO from gate G3 (formerly known as G93). When I go to create custom pushback, it shows me as in the screenshot. When I want to add a waypoint by pressing F6 as stated in the manual, nothing happens. F6 is not assigned to anything within P3D or to any other add-on software. Any thoughts?