I'm trying to use vertex group to instance an object in geometry node, for example, a table with his legs. But don't work
Edit: I think that Gabriel's suggestion of using the "point separate" node is a more flexible solution.
Each vertex has a weight from each vertex group available attribute:
If we create a cube with a vertex group
lid, each vertex gets a new attribute "lid" that contains the vertex weight:
Then we can multiply the scale of each point by this vertex weight and create our instances on all vertices:
The above answer still keeps the instances with 0 scale, so if you use that in an object with a more complex geometry you will get lots of instances, resulting in an unresponsive viewport.
In my image I have an inverted U bike rack which have 2 vertex groups consisting of a single vertex on each side each, I used it to put bikes in the racks with particle systems, but geometry nodes make it much more controllable, now I can orientate the bikes as I want :D