Yam Display for macOS Mojave.

Installation of Yam Display driver
macOS Mojave requires explicit allowance for a newly installed 3rd party system extension. To complete the installation, please allow loading the extension in  > System Preferences > Security & Privacy > General and restart your Mac. The restart may take longer time than usual.

mojave_guide

For Touch Gestures
For touch gestures to work, explicit allowance for Accessibility in  > System Preferences > Security & Privacy > Privacy is required:

mojave_accessibility

Performance issue in macOS Mojave 10.14~10.14.1
There is a performance issue which can cause delay in macOS Mojave 10.14~10.14.1. The issue can be resolved by updating macOS to 10.14.2 or later. Extending display by AirPlay is not affected by this issue. Users who should stay in the earlier versions can toggle using AirPlay by Preferences > Extend Display by AirPlay menu:

mojave_airplay

Automation for AirPlay (for Extend Display by AirPlay)
To automate extending display by AirPlay, explicit allowance for Automation in  > System Preferences > Security & Privacy > Privacy is required (or, you can manually select AirPlay to: Yam Display by the AirPlay menu):

mojave_automation