I want to uninstall EmEditor from one computer, and install EmEditor to another computer. Are there any procedures to follow for licensing?

Please ensure that you unregister from the previous computer first. Uninstalling the desktop version of EmEditor will automatically unregister the device. For Microsoft Store and portable versions, you can unregister in the Registration Information dialog box.

On the new device, install EmEditor and register. Go to Help > Registration Information and click Sign In/Enter Registration Key. You can register with your registration key or Customer Center credentials.

Also see How do I transfer the license from one device to a different device?