My wife and I both work for companies with Office 365 subscriptions. When we log in we see the offer to download the 2016 version of Office to our MacBook for free. We already have the 2011 version (purchased a permanent license). Can the 2016 version be on the MacBook along with 2011? And if either my wife or I quit working for the companies that provide us with Office 365, what happens to the 2016 version we download to our MacBook? Does it stop working? Thanks!