Utility Panel Default to Duplicate File finder

I seem to remember doing this at some point now cannot work out how it may be done.
Is my memory playing tricks on me?
I want to hit F3 and bring up the utility panel with the utility mode set to Duplicate files.
with thanks for any replies even if it was - you was dreaming old boy!

Edit the Tools > Find Duplicate Files menu item and give it the F3 hotkey.

You may also need to remove the F3 hotkey from whatever has it now. The Customize > Keys tab will show lines in red if they have the same hotkey as another thing.

Ah...just seen this.
Or I could just use Ctrl-u!
thanks.....not for the first time...