In a Leaflet-based app I have create several overlays, grouped with leaflet.groupedlayercontrol.js, as shown in this image:

![enter image description here][1]

Everything works well, but I need to uncheck certain layers, allowing the user to check them if needed (the app should open with Heatmap and Geometries on, and the others off).
I have references both to the layers and to the control object. How can I check/uncheck these overlays without removing them from the map object?


  [1]: https://i.sstatic.net/kRCmS.png