First you need to have a KMS service up and running : See my blogpost Windows 10 KMS Active Directory Activation
Then you have to Download the “Microsoft Office 2016 Volume License Pack”
Now you can install the Microsoft Office 2016 Volume License Pack
Click on the download file to install
Select “Click here to accept the Microsoft Software License Terms.”
If you are logged in with a user with out rights to the AD – then select the “Alternate credentials”
Enter you KMS key.
Optional – Enter a display name (I recommend this – so it is easy to se the object in AD if you have multiple KMS keys in same AD, ex. Windows8, Windows 10, Office2013 or Office 2016)
Click Commit to activate online
Click close – if you click Next at this point you will delete the AD object you just created
Now you can use ADSI edit to browse the AD to see your KMS object
In the Display name you can see the text created earlier.