Essentials 2012R2 and Office 365: concerning desktop apps, how do you move proplus license from machine A to machine B

rolling out o365 desktop apps to several machines.  we bought 10 licenses of office 365 business and 1 office 365 proplus license (along with essentials for all the machines).  how do we swap the proplus and business license from 1 machine to another?

first, this is a church / gets microsoft non-profit office 365 (essentials (exchange online) is free and business and proplus both cost $2 / month).

1 person needs access. (he's on machine A)

in error machine B got the proplus (and has an essentials) license
Machine A has business (which includes the exchange online) license.

we installed desktop apps including access on machine B
We installed desktop apps without access on machine A

Turns out machine A needs access.

What's the right / simplest way to get access onto machine A?

Take the business & proplus license off the users in essentials dashboard?
Then assign them correctly?  Will that automatically add access to the machine that doesn't have it now? And turn it off for the machine that has it already?

Or I manually have to rerun the desktop apps install app?  Do I have to uninstall the desktop apps install first?

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BeGentleWithMe-INeedHelpAuthor Commented:
going forward / to keep options open and since proplus and business cost the same for non-profit, what would you get to cover your bases?  

The free essentials and the ProPlus?  they don't expect to need yammer and all those other things in 365 business.
If you login to the portal and go to the Office 365 Settings tab where you install the software you can deactivate the installation you have installed on the wrong machine.

You can then remove Office and re-install the correct version.

If you shut Office and open it again on the machine you might be able to just straight login to the correct account and that will license it again but it might need you to reinstall the right version.

Then login to the machine you want to install it on, download the software and sign into 365.

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BeGentleWithMe-INeedHelpAuthor Commented:
so basically, it's a manual uninstall office that has / doesn't have access and reinstall it to get the proper version to be sure to get it right?

O365 isn't smart enough to say 'oh, this machine is now licensed for access (wasn't last time I checked) so I'll go enable / get the access bits?

and on the reverse - oh, this machine isn't licensed for access anymore. let me go uninstall it / turn it off.
If you need to switch versions I've never seen another way to do it for packaged products.
BeGentleWithMe-INeedHelpAuthor Commented:
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