How to enable mouse input in Unity?

Hi everyone, 

I have a bluetooth mouse connected to my Meta Quest 3 and want to use it in my Mixed Reality Unity project. Even though the mouse is connected to the headset, it's not registering the mouse or showing the cursor in my unity project. What do I need to do for unity to register the mouse? I'm using the Mixed Reality Template from Unity. I'm quite new to this and unfortunately haven't found any tutorials on this.