Registration on Windows: Multi-user computer

I have a new, dedicated Windows 10 Pro computer for PianoTeq.  When I set up the computer, I made my Administrator account and installed and activated PianoTeq on the Admin account.  Now I wish to set up the same computer with a second "Piano" account (non-admin).  I was surprised to see that under the 2nd account, while PianoTeq was already installed, it would require another activation. 

So, in this case, if I have two users on one computer (only one can be used at a time), do I need to use two of my three activations?  If I de-activate from the admin account, would that prevent activation on another user account on the same computer?