I can't use the mouse and keyboard at the same time

[LinkvsGanon]

Okay so the problem is that I'm having trouble playing Goldeneye 007 for the Nintendo Wii on the iMac because I can't use the keyboard if I'm using the mouse input and I can't use the mouse input if I'm using the keyboard input. I want to use the GameCube controller settings for my keyboard and mouse. WASD to move, the mouse for shooting and aiming, stuff like that. I screenshotted the devices list and it shows the keyboard and mouse as two separate inputs. I wanted to know if there was a way to use the two at the same time. I'm wondering if the fact that they're both bluetooth is the reason why. I will provide more information or screenshots if needed. Any kind of help would be appreciated