Set starting position of objects on stage

I'm new to JavaScript and Adobe Animate. I have a rather involved project going you can view the current working version at Digital Magnet Board

The concept is a magnet board that allows the user to manipulate the tiles to spell words. We will be using this to teach students to read during distance learning. It is functional right now with my current code. I'm guessing there will be 100 more tiles added to the board by the time I'm done. I've got the items dragging and dropping. If there's a simpler way I'd love some feedback.

Is there a way to set the start positions of the tiles when the animation loads so I can have the reset button return the tiles when the button is clicked?

Right now I'm accomplishing the reset with a ClicktoPosition function, but I'm also having to put individual coordinates in for every tile which is cumbersome and time consuming. I've also tried resetting with keyframes and having the button reload the webpage but then you have to navigate back to the section. 

    this.resetButton.on("click", fl_ClickToPosition.bind(this));
            function fl_ClickToPosition()
            {
                           this.cardA.x = 32;
                           this.cardA.y = 66;
                           this.cardB.x = 83.45;
                           this.cardB.y = 66;
                           this.cardC.x = 134.85;
                           this.cardC.y = 66;
    }

Right now this is the code I'm using for the drag and drop functionality - I'm manually adding this with each tile. 

this.prefixSUB.on("pressmove", function(evt){

var p = stage.globalToLocal(evt.stageX, evt.stageY);
evt.currentTarget.x = p.x;
evt.currentTarget.y = p.y;
});

Thank you for any assistance you can provide.

Erin