Button to swap dpad with analog?

[Mavsynchroid]

Hey guys, I was playing around with an emulator for ps1 on my android phone called duckstation. There's a button you can put on screen that when you press it, the dpad turns into the left analog stick and vice versa.

It's absolutely incredible for when you are on menu screens to swap to dapd and then when controlling your character to swap back to analog. I searched but couldn't find a similar button to add to my "HUD" or screen layout or whatever on ppsspp. Am I hopefully missing it?