If youre wanting to add GUI widgets like the thumb sticks, Make a new Touch Interface Setup, and open it up.
Click the + next to “Controls” to add a new input control. You can assign all the settings / images for it there.
Under “Main Input Key”, you can assign it to an input that Blueprints recognizes
Once it’s done there, Head over to “Project Settings”, and hit “Input” on the left toolbar. In the " Mobile" section, assign your Touch Interface Setup to the “Default Touch Interface” section.
