You need the Clickteam Fusion 2.5+ DLC, as mentioned in the description. Custom qualifiers aren't available in the regular version of Fusion.
A member registered Apr 05, 2019 · View creator page →
Creator of
Debugging panel and keyboard/gamepad controller engine for Clickteam Fusion
Performance measuring widget for your Clickteam Fusion project
A powerful camera system for Clickteam Fusion 2.5