How to implement custom mobile input controls?

So I just started using Unreal Engine and i have a bit of trouble with this topic. Can anyone help me in this case?
I am making a platformer and pretty much the main character is a ball but I don’t want it to roll I want it to move just like a normal character. I can’t figure out how to link the 2 UI buttons for moving left and right to the actual character.
If you guys can help me in this situation I’ll be more than grateful.

The UMG Buttons have an onClicked Event. When these fire, get a reference to your Pawn and call addMovementInput on it (if your ball is child from character) or how ever your movement should look like. Have a look at the sidescroller example or any of the FPS/TPS Templates how to input movement.