macOS (OS X)
Copy “Twixl Publisher.app” from the disk image to your Applications folder. When opening this app, you will be prompted to install or update the plug-in if it has not been installed yet, or if it needs to be updated. The plug-in will then become available in InDesign from the menu Window -> Extensions.
Double click the "Twixl Publisher.exe" installer to install the plug-in for all supported versions of InDesign that are installed on your system.
The plug-in will become available in InDesign from the menu Window -> Extensions.