The Mouse tab is the main tab for your Razer device. From here, you can change your device’s settings such as button assignment, DPI sensitivity, and lighting**. Changes made under this tab are automatically saved to your system and cloud storage. Customize The Customize subtab is for modifying your mouse’s button assignments.

Select your mouse from the bottom menu, if not already selected. Hit "+" under Select Profile to create a new profile. The trash icon deletes the selected profile and the contextual menu lets you import/export. Name the new profile. (Tip: I use game titles.) Add a keyboard shortcut to switch to this profile on the fly. (FN + number keys.)