Norman: your question is off topic little bit but I will answer
Yes, engage is a dock for apps, opened apps and gadgets. Unfortunatelly you are not allowed to place the systray gadget into it, because of a bad programming style the systray was made. Moskha will collapse. I mentioned the Systray module because the connection manager with your WiFi is a part of the systray.
Anyway, there is a way how to do it. One of the solutions is called Connman. It is a gadget for the connman deamon. It is not used for some reasons in Moksha as default (ask Jeff why). Maybe lack of features. I don't know. Anyway, this gadget should be easily placed into Engage module