Install Office 2016 OEM without Live account

I manage IT services for several small businesses and periodically need to purchase new computers with Office. I just purchased a new Dell laptop with the OEM version of Office 2016 Home & Business. It will not let me activate it without adding it to a MS account.

I know this is a perennial question, beginning with Office 2013, that is a major headache for independent technical consultants that support small businesses, as I do. But I have never seen a solid answer as to how to get this installed on the computer without the MS account--just a lot of try this, try that. This is NOT Office 365, just Office H & B 2016!

 I will not:

• Add it to my MS account, or it will be forever stuck to me--which is inappropriate, since I will not own the computer or software once I am paid for the system by my client.
• Make my client set up a MS account just for this.
• Pry into my client's information to get his MS account information (if he even has one).

But I must have Office installed, activated, and updated before I give the system to my client. The activation dialog, in fact, gives me the option of using a product key instead of a login, but then proceeds to "Redeem Online"--which I believe will end up with the same result that requires a MS account.

At this point, I now have a bigger issue. I backed up the Program Data folder that contains the cached Office installation files, then uninstalled MS Office, hoping that a reinstall would give me some option to truly install without being forced to figure out a MS account for my client. The uninstallation removed the original setup folders. Good thing I backed it up, but then when I reinstall from any of those, it installs Office 2013, not Office 2016. And while it still validates the key when I click the option to use a key instead of a logon, it (as before) takes me to "Redeem Online".

Hello, Microsoft: this issue alone has just eliminated my entire profit from this project, given the time I have already spent trying to get this done, then uninstalling and attempting to reinstall.

I know there are versions that can be activated without a MS account, but I do not buy in bulk and can never seem to figure out which is which.

How do I get this installed for my client without being required to use a MS account?