Targeting a specific mouse.

Hi, I need to target a specific mouse to map the left and right buttons. If I use “Normal Mouse” it prevents proper use of the trackpad on my MacBook. The mouse is a tiny bluetooth mouse I can hold in my hand while giving presentations.

For giving presentations, I want to use the mouse wheel for scrolling the PowerPoint speaker notes—that works great without mapping. I want to map the left mouse button to the left arrow key, for going to the previous slide, and the right mouse button to the right arrow key, for advancing to the next slide.

How can I target a specific bluetooth mouse?