Step 1: Click on System Preferences. (Only do this if the keyboard set up assistant window does not appear by itself)

 

Step 2: Click on Keyboard. 

 

Step 3: Make sure that it is on the Keyboard tab. 

Step 4: Click on Change keyboard type. 

 

Step 5: Once you pair/connect the device you will need to press continue.

 

Step 6: On the Macally Keyboard press the letter Z key once.

 

Step 7: On the Macally Keyboard press the /? key once.

 

Step 8: Select ANSI.

Step 9: Click on Done.