Hi,
is it possible to connect multiple links to a link in GoXam, like the below image…
I believe that is possible – you need to implement a custom Route class that goes from the (yellow or green) nodes to the closest point on the Link Path of the label Node to which the custom Link is connected.
The BarRoute in the Sequence Diagram sample does something similar, but it is simpler because it goes directly to regular nodes rather than to a label Node that is on a Link whose route is not always vertical.