Click to dismiss a HUD before "duration to show" time.

When BTT shows a HUD, I want to be able to click on the HUD to dismiss it before the timeout of the "duration to show"

Not exactly what you want, but you can enable "Hide immediately after another HUD is being presented.", then create a keyboard shortcut trigger (you can create other as well, this is just an example) which will show another HUD (same action - "Show HUD Overlay"), however this HUD will have "HUD Width" and "HUD Height" == 0 .

5.251 adds a hide on click option: