How to shoot a projectile toward the center of the screen

Here's the documentation for it: https://developers.meta.com/horizon-worlds/learn/documentation/create-for-web-and-mobile/grabbable-entities/aim-direction

But in summary, the script should be running locally, and the GrabbableAim arrow should be adjusted to point in the direction that you want to shoot. This arrow is only visible when switching to VR mode.