Office 365 ProPlus is a new subscription plan for Office 365. It enables users or businesses to extend their Office productivity software (including Word, Powerpoint, Excel, and others) to allow installations to up to 5 different devices per user. The account is tied to the user, not to any one device, so it allows seamless interaction between working on home devices and on mobile devices. It also allows users to deactivate their software in the case that any one of their devices is compromised or if a person leaves the business.
Review the Office 365 ProPlus System Requirements.
NOTE: OneDrive is automatically downloaded in Windows 8 devices.
Office365 ProPlus: LSU Retention
Installation Instructions (Windows)
Installation Instructions (Mac)
Installation Instructions (Android phone)
Office365: Learn more about how to use Office 365
Office365: Set up Office 365 on your mobile device
Office365: Troubleshoot Office 365 (Installation help)
Referenced from: products.office.com