Hi @Luiz D'Aniello,
if you want to show the Window2 inside the Navigation2, you should first show the Navigation2; you can show Navigation2 in different ways, depending on the transition effect you want, but you can't open a Navigation inside another Navigation (in this case you can't show the Navigation2 inside the Navigation1):
- you can present the Navigation2 as modal window over the current context with one of the available animations, for example
- or you can set the Navigation2 as the root content of the App instead of the Navigation1, for example
In both cases, the Navigation2 is presented with its current content, for example with Window2 if it is the first Window configured inside the Navigation2 in the Layout panel of the Creo IDE.