> Upgrading, Changing and Deactivating a Serial Number
> When ScreenFlow is licensed, the Licenses pane enables you to upgrade, change serial numbers, and deactivate serial numbers, as depicted in Figure 82.
> Figure 82. Preferences Licenses Pane (Licensed)

> Table 28. Preferences License Options
> Button | Description
> Upgrade License | If an upgrade is available, click to upgrade your ScreenFlow license from a previous version, enabling access to the features of the current ScreenFlow version. The upgrade fee depends on which license you currently have installed.
> Change Serial Number | Click to enter a different serial number that you have already purchased for use with ScreenFlow.
> Deactivate Serial Number | Click to deactivate your ScreenFlow license. This allows you to use your license on a different computer. Please allow up to 15 minutes to process the deactivation before re-activating this serial number.