Please explain further. Finale already has chord symbols that can be applied to just about any instrument.

Or do you want chords without the fretboards? They can be turned off in the Chords menu.

Sorry not so precise opening. I mean situation like this:

Petri Kangas,

If I understand you correctly, you are requesting a new Chord Tool feature:

Keyboard diagrams, similar to the Chord Tool’s fretboard diagrams.

Indeed keyboard diagrams would be a nice feature - and a help for keyboard students.

The requested feature is not in the Chord Tool, but instead you can use the Expression Tool to add keyboard diagrams.

This example was done in Finale:

But in this example the diagrams have a range of two octaves.

I think that the graphic you attached, shows a better solution, because the diagrams have a range of only one octave.

Peter: thanks for tip with Expression tool. Like you said, I think one octave would be better and enough in most cases. Let’s hope we’ll get keyboard diagrams some day :)
Br. Petri

There is a JW Lua script for this on the French forum "Finalisons"  (register as a member first), developed by chris. English interface available. Shape expressions. Range is variable, 2 octaves max. Fingerings optional. 

http://finale-logiciel-aide-gravure-musicale.eu/viewtopic.php?f=15&t=4433&p=23059#p23059

Color me impressed!

Michel: wow, thanks!

Very impressive MICHEL HERR. Thanks again!

Sorry, haven't ever used plug-ins/scripts...tried to install in plug-ins folder, but doesn't show in Finale's plug-ins. What am I doing wrong? Restarted computer.

From what I can see, you have installed JW Lua correctly on your Mac.

There are 2 more steps (assuming you have downloaded the script file "Keyboard diagrams.lua") :

1) place the "Keyboard diagrams.lua" file into the JW Lua folder (which contains jwlua64.bundle)

2) Via the plug-ins menu of Finale, launch JW Lua, then select Manager (if not selected), under "Menu groups", click on the "Menu" item, and below, under "Items in Group" -> "New". Locate the  "Keyboard diagrams.lua"  script to load it.

Relaunch Finale. The new script should be visible in the JW Lua folder (Plug-ins menu). You can now use it. There is a button in the bottom left corner to select the English interface.

P.S.: for the future, you should install RGP Lua, and create a similar subfolder. RGP Lua is the new Lua environment, currently developed by Robert Patterson. It can use most of the JW Lua scripts (if a copy is placed in the RGP Lua folder and loaded into RGP Lua), and many new ones.

I did that, and still empty JW Lua folder when I open Finale. BTW, that's the folder I made myself and named it JW Lua. 
I have MacBookPro M1 14". I also tried to start Finale with Rosetta mode, but it says this plug-ins is not supported.

Your JW Lua folder looks ok.

Now that you mention Mac M1 (Monterey and Finale 27, I suppose, please add all these infos to your profile, it helps narrowing down the problems), all the JW plug-ins (and JW Lua is one of them) are not native.

So Rosetta is the only way to use them.

1) In the JW Lua (Manager selected) window, do you see "Diagrammes ..." at the bottom, under Items in group ?

2) Did you restart the Mac ?

3) What is the exact error message you get ? Is it about authorization ?

P.S. : Other JW plug-ins (also non native) seem to work if Finale 27.2 (your version ?) is launched in Rosetta mode.

Another solution to piano chords is to use NorKeys font found here: NorKeys Font | NorFonts 

RGP Lua worked for me! Many thanks Michel!

And thanks for NorKeys font Nor Eddine Bahha!