Some hardwa re and

software doesn’t work in High Sierra. One solution is to keep Sierra or earlier running in a virtual machine (VM). You can install it in VirtualBox 5 or Parallels Desktop 13, but we’ll show the process in VMware Fusion 10.

You’ll need a copy of the installer for your older version of macOS or OS X (Lion or later). An obstacle here is if your current Mac shipped with a newer version; the Mac App Store will refuse to download the older installer; there’s no override for this. The other options are to search your Time Machine backups for the right version, or redownload on an older Mac, if available.