13 Feb 2023
You can assign any keyboard shortcut to any action, either at system level or at app level, as long as the action is listed in the system's/app's menu.
System Settings... >
Keyboard Shortcuts... >
Shortcuts can be defined for any app:
Important is to enter in this field the exact name of the action in the app, as it appears in the app's menu.
For example, for Things !apps/things I added
Quick Find... (note the
... and proper capitalisation), which is exactly what appears in the Things menu: