Working on a AIX deployment for the moment.
A very usefull tool on AIX for configuring a lot of stuff on the system is smitty
Issue is that on smitty you have to use the keyboards function keys to navigate. These don’t work.
There is a simple solution for this.
Go to you Putty preferences and alter your “Terminal – Keyboard” settings for the “function keys and keypad” to “Xterm R6”
Make sure to save this setting to your server connection.