Character throws projectile, how to change controls from top down character movement to follow projectile in third person "look around"?

The character moves with the top-down content example: clicking and the character moves.
Pressing a button, the character throws his projectile. I managed to get the projectile’s own camera to get activated and follow the projectile’s trajectory.

How can I change the input from top-down point & click to move => to a 3rd person view (mouse movement = look around)?


I have tried creating a new Game Mode and Player controller that has the Mouse X & Y inputs.

Thank you!!