looking for a way to toggle group/layer selection

[Mr. Content]

Is there a way to set up a keyboard shortcut or an existing modifier for the Group/Layer selection?

[Stephen Marsh]

An Action can play the selection of a tool preset, but it may fail if the tool preset is set to "current tool only" and the move tool isn't selected. Also, the only keyboard shortcuts are Functin F-key based. So actions have limitiations.

Scripts offer more flexibility. There might be a way to directly script this with arcane AM code, however, I don't know about that.

What I do know is that you can create two named presets for the move tool,  such as "Move Tool - Group" and 

"Move Tool - Layer" for example, then indirectly reference these presets in a script and then set a custom keyboard shortcut against each installed script.

// Select 'Move Tool - Group' Preset

#target photoshop

(r = new ActionReference()).putClass(stringIDToTypeID('moveTool'));
(d = new ActionDescriptor()).putReference(stringIDToTypeID('target'), r);
executeAction(stringIDToTypeID('select'), d, DialogModes.NO);

selectMoveToolPreset("Move Tool - Group");

function selectMoveToolPreset(thePresetName) {
	function s2t(s) {
		return app.stringIDToTypeID(s);
	}
	var descriptor = new ActionDescriptor();
	var reference = new ActionReference();
	reference.putName( s2t( "toolPreset" ), thePresetName );
	descriptor.putReference( s2t( "null" ), reference );
	executeAction( s2t( "select" ), descriptor, DialogModes.NO );
}

And:

// Select 'Move Tool - Layer' Preset

#target photoshop

(r = new ActionReference()).putClass(stringIDToTypeID('moveTool'));
(d = new ActionDescriptor()).putReference(stringIDToTypeID('target'), r);
executeAction(stringIDToTypeID('select'), d, DialogModes.NO);

selectMoveToolPreset("Move Tool - Layer");

function selectMoveToolPreset(thePresetName) {
	function s2t(s) {
		return app.stringIDToTypeID(s);
	}
	var descriptor = new ActionDescriptor();
	var reference = new ActionReference();
	reference.putName( s2t( "toolPreset" ), thePresetName );
	descriptor.putReference( s2t( "null" ), reference );
	executeAction( s2t( "select" ), descriptor, DialogModes.NO );
}

https://prepression.blogspot.com/2017/11/downloading-and-installing-adobe-scripts.html

[Mr. Content]

Thanks a lot. That is heavy code knowledge but I will try it. 

[Stephen Marsh]

@Mr. Content 

Let me know how you go. After almost a month, I thought that this was a hit-and-run topic and that you wouldn't be back!

[Mr. Content]

I tried this but my acute allergies to code flared up and I just decided to live with it the way it is. Sorry so slow in informing you.