Best answer: You have to download Razer Synapse. If you already downloaded Razer Surround before using any Razer product, you will have to uninstal Razer Surround and go to the Razer Synapse website and download it from there (I know this from personal expierence). Once you download Razer Synapse, open it up and go to the Mouse tab and click on the Customize button under it. Under where the picture of the mouse is, click "go to Side View." Then, click on the button you want to program something to and program it to a function, like a macro or a keyboard button. This is very helpful when playing MMO and MOBA games. I have also found the macros to work good with buying in CS:GO. I hope I answered your question.
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