Keychron-Assistant is a supplementary tool for Keychron Launcher that provides Quick Start functionality.
Below are the tutorials for downloading and installing Keychron-Assistant on macOS and Windows.
Installation for macOS
1.Connect your device, select the Quick Start function area on the left, and click Download to get the latest version of the software.
2.Once the file is downloaded, double-click to open it.
Please note that a pop-up prompt may occasionally appear: "The publisher of this software is unknown. Do you want to continue opening it?" Click Open to launch the file normally.
3.Double-click to open the application named Keychron-Assistant.
4.Once the installation is complete, you can click here to return to Launcher and access more features.
Installation for Windows
1.Connect your device, select the Quick Start function area on the left, and click Download to get the latest version of the software. 
2.Once the download is complete, double-click the compressed package to extract its contents.
3.Please note that Keychron-Assistant may be marked as untrusted on some computers. Users need to manually grant trust permissions first: click More info > click Run anyway > then proceed with the download.
4.Then follow the on-screen instructions to complete the installation of Keychron-Assistant.
5.Once the installation is complete, you can click here to return to Launcher and access more features.