1) I have not yet done this, but I think it is done by creating a OnUseAction (sidebar) trigger (on a global object) which teleports the one that clicked it to "ID". The ID in this case might be the other level or it might be a item in the other level - I am not sure. Check the editor - Cyseal bridge and then afterwards Lucella forest (where you spawn at that level). There should be a trigger, object, something with the ID the bridge targeted. Otherwise - how would the bridge know where to send you in Lucella forest?