You can install Final Draft on as many computers as you want. However, if you have the standard retail package, only two of these can be activated at a given time and can be used only on computers owned and operated by you.
If you have more than two computers on which you'd like to run Final Draft, 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, please contact sales: