Open folders only in Opus

Win 11. Would like to open folders with Opus in Desktop with 1 click.

What the Windows desktop does is up to Windows. Opus can make itself the default folder handler, but it can't change the number of clicks it takes to make the Windows Desktop open something.

(There used to be a single-click option for the Windows shell as a whole, which may still work in Windows 11, if it's still there.)

In windows 10, use Windows Key + S and type single click, to find this setting. I have no idea whether it's in Windows 11.