The Norton 360 name reflects an emphasis on omnidirectional protection for your devices, your identity, your data, and more.
All the other Mac antivirus utilities I've evaluated install without a reboot. Like Intego Mac Internet Security X9, Norton requires a reboot to complete the installation. You can then download and install Norton protection on your Mac, or email a link to install it on another device. To start, you create a Norton account online and register the subscription you bought.