License usage in Office 365 ProPlus

Hello All,

I am interested to purchase Office 365 Pro Plus package for my organization which comes with Microsoft Office 2013.

Office 365 pro plus comes with ability to install in 5 machines. If i purchase 1 user license and install it in 5 machines in my organization then will this be License infringement or it is OK to use concurrently.

Thanks,

Ashish