What's the right way to put office 365's office suite on some PCs when there's a version of office already installed? Essentials 2012R2

we have an Essentials 2012R2 domain.  the desktops have an assortment of office 2007, 2010 and 2013 on them already. They are using outlook for POP mail from godaddy.

They are staying with Godaddy pop for now.  What's the right way to get office 365's office suite on the machines?  Just install on top of 07, 10, 13?  Then uninstall the OEM version of office?  Or don't bother?

The outlook settings will carry to the new version?
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David Johnson, CD, MVPOwnerCommented:
Microsoft Technet has a complete article on this and the scripts to run

Moving to Office 2013 Subscription from Installed Office

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