You can install Final Draft on as many computers as you want. However, for a single user license, you can only have FD fully operational on two computers at once by activating or signing in when asked. Any installation of FD that is not activated or signed in will be in Reader Mode, so you can open and read your .FDX files, but not edit them.
If you have Final Draft 13, sign out of Final Draft on one of your computers and sign in to Final Draft on a third computer. Note that your computers must be connected to the internet in order to sign in and out.
If you have Final Draft 12 / 11 / 10, you can deactivate one computer and move the activation to another. To deactivate, open Final Draft, go to Help > Deactivate and follow the prompts. Once a computer has been deactivated, you can activate another computer immediately. Note that your computers must be connected to the internet in order to activate and deactivate.
If you want to purchase more copies to use on more than two machines concurrently, please email our Sales Support team here:
https://www.finaldraft.com/support/
6025
https://fd.support/3oPYHZV