How do you edit default shapes in LibreDraw

There is no glue point in the center of the circle shape in LibreDraw. I would like to add the glue point to the center of the circle and all circles thereafter.

Then add a glue dot. Click the “Show Gluepoints Function” icon in the toolbar. The “Gluepoints” toolbar will be displayed. Click on the “Insert Gluepoints” icon.
Click in the middle of the circle.

You can add as many gluepoints as you like.