How do I add a laptop to subscription?

Hi Nancy1
 
Welcome to the Community Forums.
 
If you have enough devices left on your subscription, i.e., you have one unused device, as you say that you have then simply follow the instructions below closely in terms of installing WSA on the target system/machine!
 

• Make sure you have a copy of your 20 Character Alphanumeric Keycode! Example: SA69-AAAA-A783-DE78-XXXX
• Be sure you have or add your Keycode to your Online Console HERE
• KEEP the computer online during the install to make sure it works correctly
• Download a Copy Here (Best Buy Subscription PC users click HERE). Let us know if it is the Mac version you need.
• Install with the new installer, entering your Keycode when prompted to do so in the install process
• Let it finish it's install scan
• Reboot 

and that should do the job.
 
Regards, Baldrick